Signal detection

This rf scanner detector is mainly used for wireless signal scanning equipment, it does not have the ability to sneak shots and eavesdropping. This bug detector is a professional anti-spy equipment, it can detect most of the wireless cameras and audio bugs by RF frequency detection. This rf detectors adjustable potentiometer sensitivity achieves its function. Easy to use(only switch+sensitivity knob),Sound and light alarm indicator,accurate and reliable (Larger/smaller sensitivity can expand/reduce the detection range). The rf signal detector with digital receiving mode can detect whether there is strong radio signal radiation around the living and working environment, whether there is strong electromagnetic radiation leakage harmful to household appliances, such as refrigerator, TV, computer, air and other regulated or suspicious wireless signals.. This anti spy detector is widely used for detection: phone tapping, digital eavesdropping, tracking, vehicle eavesdropping, wireless pinhole cameras, cable cameras, appliances and other sources. Application 1.This bug detector can scan your car for the car gps tracker. 2.This rf detector can detect if there is a mobile phone bug device around you. 3.Does your work around the house and the residential building have a base station radiation environment. 4.This bug scanner detector can scan SMS sending and receiving signals, mobile internet, mobile phone switches and telephones. 5.This rf detectors detect wireless network signals, cell phone base stations and wireless monitoring systems. 6.This rf signal detector can detect whether the household appliances are harmful to the human body, such as microwave oven leakage. 7.Can detect whether there is a suspicious wireless signal in the conference room environment 8.This anti spy detector for hotels, bathroom hotels, entertainment, locker rooms, etc. 9.This camera detector for business negotiations, school management, factories, security facilities. Main feature can detect Mobile, unicom, telecom, 2G 3G 4G Card for bugs and locator. can detect High-speed upload GPS locator packet locator. can detect 1.2G/2.4G wireless camera can detect hidden 5.8GHZ wireless camera and Wireless eavesdropping. Technique Data Frequency Range: 1 MHZ-8000MHZ detecting the dynamic range: >73Db detection sensitivity: 0.03mw(main frequency) Detector range: 2.4GHz wireless camera: 15(standard 10mW camera) 1.2GhZ wireless camera: 10(standard 10mW camera) Mobile: 2G,3G, 4G: 10 Indicating, 9level, LED Luminous instructions/modulation sound instructions. Power: built-in 3.7V 800mah lithium polymer battery. Working current: 60mA working time:10-15 hours Material: aluminum alloy weight: 160gvolume: 102x52.5x215mm Package Included: 1 X Signal Detector 1 X Power 1 X Use Manual

Gold EU Wireless RF Signal Detector Bug GPS Camera Signal Detector for Detecting Camera GPS Tracker Wireless Signal Detector, Key Features… High sensitivity and strong anti-interference. Anti-tracking, anti-eavesdropping, anti-sneak shot. Suitable for work environment, family environment, public places, specific occasions. A variety of radio wave detection, anti-eavesdropping, anti-positioning, anti-monitoring, anti-tracking. High-speed chip for more sensitive detection, higher accuracy, active detection and passive detection. Super signal receiving capability, easy to find indoor bugs, wireless monitors according to alarm prompts., Manufacturer Specifications Item type:Detector Color: Gold, black Package Include: 1X detector 1X host 1X antenna 1X instructions 1X charger Note: The colors deviation might differ due to different monitor settings.

Jamming detection system Jamming is an interfering signal which disables / blocks a wireless signal. Typically the signal that is blocked is the locking/closing of a vehicle, garage or automated gate. Wireless alarm sensors and alarm remote controls may also be jammed / blocked disabling their functionality. The jamming detection unit and system provide security operators and home owners the tools to be notified if jamming has been detected. In the case of a shopping center parking lot, the area in which jamming occurred can be transmitted to the local control room for fast reaction Specifications   Multiple jamming detection frequencies GSM (vehicle tracker) Jamming detection available Up to 100m detection range Programmable jamming detection time Built-in battery backup Mains fail and battery low reporting 2 local outputs (Siren & Buzzer) SMS functionality direct to cellular phone Should you be located in the greater Johannesburg we arrange for delivery within 3/4 working days free of charge.  Please query if your order qualifies for free delivery before placing the order.

Jamming detection system   Jamming is an interfering signal which disables / blocks a wireless signal. Typically the signal that is blocked is the locking/closing of a vehicle, garage or automated gate.  Wireless alarm sensors and alarm remote controls may also be jammed / blocked disabling their functionality.  The jamming detection unit and system provide security operators and home owners the tools to be notified if jamming has been  detected.  In the case of a shopping center parking lot, the area in which jamming occurred can be transmitted to the local control room for fast  reaction Specifications   Multiple jamming detection frequencies GSM (vehicle tracker) Jamming detection available Up to 100m detection range Programmable jamming detection time Built-in battery backup Mains fail and battery low reporting 2 local outputs (Siren & Buzzer) SMS functionality direct to cellular phone Should you be located in the greater Johannesburg we arrange for delivery within 3/4 working days free of charge.  Please query if your order qualifies for free delivery before placing the order.

SONIFEX - SON-RB-SD1 Silence Detection Unit The RB-SD1 silence detection unit is a 1U rack-mount device used to monitor an unattended stereo studio feed and in the event of the signal going “quiet” after a given period the unit will switch through an alternative stereo audio signal. This signal could be a recorded message (e.g. “normal service will be resumed”, etc), a feed from a CD player or minidisc machine, or an alternative recorded programme. Controls are provided to start external equipment and to provide remote status indication.

3Pcs Sound Detection Sensor Module LM393 Chip Electret Microphone For Arduino Features: The product boast of output signal instruction. Single-channel signal output. Output valid signal is low and the light will be bright. Specification: Weight: 4g Size: 3.1 x 1.6 x 0.8cm Operating current pressure: 4V - 6V Package included: 3 x Sound detection sensor module

Features: The product boast of output signal instruction. Single-channel signal output. Output valid signal is low and the light will be bright. Specification: Size: 3.1 x 1.6 x 0.8cm Operating current pressure: 4V - 6V Package included: 20 x Sound detection sensor module

Buy GPS Signal Lens Tracker Detection Multi-function Anti-spy Detector Camera Finder for R100.00

Buy DC 5V WCS1800 Hall Current Detection Sensor Module 35A Precise With Overcurrent Signal LED for R287.38

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA PH Value Detection Acquisition Sensor Module PH Indicator Sensor Monitoring Control Specifications: Heating voltage: 5±0.2V (AC / DC) Working current: 5-10mA The detection concentration range: PH0-14 The detection range of temperature: 0-80 centigrade The output: analog voltage signal output The response time: 5S Stability time: 60S Power consumption: 0.5W The working temperature: -10~50 centigrade (the nominal temperature 20 centigrade) Working humidity: 95%RH (nominal humidity 65%RH) Size: 42mm x 32mm x 20mm Weight: 25g Package Included: 1x PH Value Sensor Module PH Value Detection Acquisition Sensor Module PH Indicator Sensor Monitoring Control PH Value Detection Acquisition Sensor Module PH Indicator Sensor Monitoring Control

Buy Multi-function Anti-spy Detector Camera Finder GPS Signal Lens Tracker Detection for R75.00

UVM-30A 3V To 5V Ultraviolet Ray Sensor Detection Module Description: Designed to require high reliability and accuracy measurement uv index (UVI) occasions Suitable for measuring total sunshine ultraviolet radiation intensity The world health organization (who) ultraviolet index classification standard Detection of UV wavelength: 200-370 nm Extremely fast response, the interchangeability Adopt the solid polymer having the patent structure, waterproof and dustproof easy to clean Linear output voltage signal Feature: Working voltage: DC 3-5 v Output voltage: DC 0-1 v Test accuracy: + / - 1uv INDEX  Working current: Typical values 0.06 mA, The maximum 0.1 mA Response wavelength: 200 nm to 370 nm Work stability: - 20 ¿¿¿ -- 85 ¿¿¿ Application: Uv tester, uv index instrument, outdoor uv monitoring equipment, sterilization lamp, flame detection Package included: 1 x Ultraviolet Ray Sensor Detection Module

VC77 Digital Multimeter 2 In 1 4-20MA Signal Output Multimeter Process Signal S Package weight: 0.62 kg Features: 1.Multimeter & Signal Source 2 in1 2. Loop detection function A. Simultaneously supply 24V loop and measure current. B. Built-in 250 ? HART loop resistor for easy access to HART communication devices without the need to carry load resistors separately. 3. Analog output function A. 4~20mA current setting by bit, manual step output function. B. SIMULATE function simulates the transmitter. C. Can be displayed in mA and percentage. D. The output accuracy is 0.2%, and the output is displayed as 5 bits. 4. Measurement function A. AC voltage, DC voltage, ohmic, DC current, on and off, diode. B. The measurement accuracy is 0.5%, and the current measurement is displayed as 5 bits, which is displayed as 4 bits. C. Measurement rate: 2.5 times / sec D. Can be displayed in mA and percentage. E. Data retention function. 5. Use panel calibration technology. Specifications: Display Screen: display in four digits(5 in current measurement and output) Refresh display:2.5 displays/second Operation temperature and moisture range:0~40 ºC, relative moisture≤85%(no condensation) Storage temperature and moisture range:-20 ºC~60 ºC,relative moisture≤90%(no condensation) Accuracy required temperature and moisture range:23±5ºC,relative moisture≤75%(no condensation) Temperature co-efficiency:0.1 × basic accuracy / ￢ﾄﾃ(temperature range 28￢ﾄﾃ) Continuity/open test:Beeper sounds for resistance readings below threshold, or to indicate a momentary open circuit Battery type:two AA 1.5V Alkaline (LR6) batteries(Not included) DC current output(SIMULATE): about 50 hours; DC current output (SOURCE)20mA(1000Ω load): about 2.5 hours. Battery life:when using alkaline battery: measures any parameter: about 100 hours; Low battery:displays battery symbol Automatic power-off:The default value is 5 mins if no operation which is adjustable. Preheating time:10min Measuring detailed accuracy indicator Measuring part range frequency accuracy remark DC voltage 50V 10mV 0.5%+4 • Measuring impedance 10 MΩ (standard value) • Common mode restrain: 50Hz or 60Hz > 100Db • String mode restrain:50Hz or 60Hz > 45dB • Overload protection: 600V (pea'k –pea'k value) AC voltage 500V 100mV 0.5%+20 (45Hz~100Hz) • frequency beeps: 45Hz~400Hz • Adaptive to range from 10% to 100% • AC conversion: mean value • Measuring impedence:10 MΩ(standard Click here for more deals VC77 Digital Multimeter 2 In 1 4-20MA Signal Output Multimeter Process Signal S VC77 Digital Multimeter 2 In 1 4-20MA Signal Output Multimeter Process Signal S

Description: AD9833 is a programmable waveform generator capable of generating a frequency 0-12.5MHZ sine, triangle, square wave signal. Waveform generator is widely used in a variety of measurement, excitation and time domain response field, output frequency and phase are programmable via software, easy to adjust, clocked clock is 25MHz, precision 0.1Hz, clock frequency is 1MHz, the precision You can reach 0.004Hz. Via three serial interfaces to write data. Application: Frequency excitation / waveform generation. Liquid, gas flow measurement. Sensing applications - approximation, sports, defect detection. Linear loss, linear decay. Test equipment, medical equipment Scan clock generator Features: 1, the working voltage: 2.3V-5.5V. 2, the working temperature range: -40 ~ + 105 ￢ﾄﾃ prefix = o 3, onboard 25MHZ (accuracy of 50ppm) active crystal, stepping accuracy 0.1HZ. 4, on-board high-speed amplifiers 300M and also has a low-pass filtering. 5, two-channel output signal, an original signal output, an amplified output signal 5 times, 50Ohm output impedance. 6, very small size: 32mm X 32mm. 7, support universal plate (tunnel plate), a multiple-board pins are 2.54mm, can be easily welded universal board. 8, distribution STM32, STM8, STC and other common microcontroller debugged program and relevant information. Package included: 1 x AD9833 DDS Signal Generator Module

Main chip: LM393,MQ-135 gas sensor Dual signal output (analog output, and TTL level output) High sensitivity and good selectivity for Sulfide, benzene, smoke and other harmful gases Signal output indicator instructions Size:36mm X24mm X25mm(L * W * H) We Courier Country Wide

Features: -With shooting recording, high-definition night vision, motion detection and other functions. -12 million high-definition monitoring, picture 1080P resolution. -High-quality high-definition lens, large aperture, low light, vivid colors, high resolution. -High transmittance high-definition capture instantaneous picture, high efficiency infrared light in low light environment can still clear imaging, efficient record. -Using coaxial transmission, transmission distance of up to 20 meters. -Larger storage space, compressed file function, support 32G high capacity storage. -Built-in high-capacity polymer lithium battery, can be used repeatedly rechargeable battery. -The recording pen has a dual microphone, surround the recording system 360 ° omni-directional, for 5 years -Applicable to learning and training, meeting records, interviews, case evidence, music player. Specifications: Product name Mini camera Material Plastic Color Black Minimum illumination 0.01 (Lux Signal to noise ratio > 48 (db) Power supply voltage 5 (V) Resolution 1920 * 1080P Working temperature 45 (¿) Pixel 1200 (dpi) Horizontal clarity 600 (TVL) Lens

Features:   -With shooting recording, high-definition night vision, motion detection and other functions. -12 million high-definition monitoring, picture 1080P resolution. -High-quality high-definition lens, large aperture, low light, vivid colors, high resolution. -High transmittance high-definition capture instantaneous picture, high efficiency infrared light in low light environment can still clear imaging, efficient record. -Using coaxial transmission, transmission distance of up to 20 meters. -Larger storage space, compressed file function, support 32G high capacity storage. -Built-in high-capacity polymer lithium battery, can be used repeatedly rechargeable battery. -The recording pen has a dual microphone, surround the recording system 360 omni-directional, for 5 years -Applicable to learning and training, meeting records, interviews, case evidence, music player.   Specifications:   Product name Mini camera Material Plastic Color Black Minimum illumination 0.01 (Lux Signal to noise ratio > 48 (db) Power supply voltage 5 (V) Resolution 1920 * 1080P Working temperature 45 () Pixel 1200 (dpi) Horizontal clarity 600 (TVL) Lens 3.6 (mm) Video format AVI Image format JPG Backlight compensation automatic Infrared light irradiation distance 2-5 meters   Package Included:   1x Recording pen miniature camera 1x English manual 1x Data Cable Detail Pictures:

Description:   The AS3935 is a programmable fully integrated flash sensor IC that detects the presence and approach of potentially hazardous  flash  activity in the vicinity and provides an estimation on the distance to the head of the storm. The embedded  flash  algorithm checks the incoming signal pattern to reject the potential man-made disturbers. The AS3935 can also provide information on the noise level and inform the external unit(e.g. microcontroller) in case of high noise conditions, with the noise floor generator and noise floor evaluation blocks. The AS3935 can be programmed via a 4-wire standard SPI or an IIC. Also, in case the latter is chosen, it is possible to choose among four different addresses. Two clocks are internally generated by two different RC-Oscillators: TRCO and SRCO. An automatic procedure can increase the precision of those oscillators. The AS3935 can be either supplied by an internal voltage regulator or directly by VDD.   Feature:   Flash  sensor warns of  flash  storm activity within a radius of 40km Distance estimation to the head of the storm down to 1km in 14steps Detects both cloud-to-ground and intra-cloud(cloud-to-cloud) flashes Embedded man-made disturber rejection algorithm Programmable detection levels enable threshold setting for optional controls SPI and IIC interface is used for control and register reading Antenna turning to compensate variations of the external components Supply voltage range: 2.4-5.5V Power-down, listening, and active mode Package: 16LD MLPQ(4x4mm)   Applications:   AS3935 is ideal for Weather Stations, Clocks, Sports Equipment, portables, Pool Safety, Uninterruptible Power Supply(UPS), Global Positioning System(GPS), Cellular phones, Watches, and Golf Equipment. Package included: 1 x CJMCU-3935 AS3935 F lash  Sensor Module,,,,,

Description: 1. On-board LM393 voltage comparator chip and temperature sensing probe. 2. Support 5V/3.3V voltage input. 3. On-board the output signal indication, output effective signal is high, at the same time the indicator light up, output signal can directly connect with microcontroller IO. 4. Signal detection sensitivity can be adjusted. 5. Reserved a line voltage compare circuit. (P3 is leaded out). 6. PCB size: 30(mm) x15(mm). Package included: 1 x Thermal Sensor Module Temperature Switch Sensor Module For Smart Car

Description: 1. On-board LM393 voltage comparator chip and temperature sensing probe. 2. Support 5V/3.3V voltage input. 3. On-board the output signal indication, output effective signal is high, at the same time the indicator light up, output signal can directly connect with microcontroller IO. 4. Signal detection sensitivity can be adjusted. 5. Reserved a line voltage compare circuit. (P3 is leaded out). 6. PCB size: 30(mm) x15(mm). Package included: 10 x Thermal Sensor Module Temperature Switch Sensor Module For Smart Car

Vocalset, comprises of NE 600 S receiver and handheld transmitter SDM 660 (dynamic, hypercardioid) The SDM 660 handheld transmitter features the interchangeable DM 960 microphone head, which applies the legendary TG-X 60 microphone capsule. The mass reduced diaphragm made in Germany ensures extraordinary sound features and a high gain-before-feedback. The elastic suspension of the capsule reduces handling noise to a minimum. SET COMPONENTS NE 600 S true diversity receiver SDM 660 handheld transmitter Batteries Rack mount material Soft case The Opus 600 wireless system is recommended for stage performances and small installations (hotels, sports halls, churches etc.). It meets all technology and transmission quality requirements while still being very reasonably priced. The Opus 600 wireless system is equipped with the automatic frequency setting function, has 16 pre-programmed UHF frequency settings and can be operated with up to 16 channels per frequency range (depending on environment and specific national regulations), simultaneously and with no interference. The latest true-diversity technology, pilot signal detection and adjustable squelch ensure reliable transmission and noise-free reception. FEATURES NE 600 S 1-channel true diversity receiver (UHF) Rugged 9.5' metal housing 16 pre-programmed UHF frequencies AutoScan/ACT-function PLL-synthesised technology Adjustable Squelch Pilot tone recognition Removable antennas (TNC), antenna sockets with power supply (+8 V) for remote antenna amplifiers Audio ouputs: 1 AF ouput (3-pin XLR male, balanced) and 1 AF output (6,35 mm jack, unbalanced), with MIC/LINE level switch FEATURES S 600 Modular design with interchangeable microphone capsules On/Off switch Power on LED Plastic housing ACT function (Automatic Channel Targeting) for automatic frequency setting Integrated antenna Powered by two AA-batteries (1.5 V) FEATURES DM 960 S With TG-X 60 microphone capsule (dynamic, hypercardioid) Silver grill Built-in metal gaze pop shield without any foam material Max. SPL 146 dB Frequency response 55-18,000 Hz

  Mini Realtime Car GPS GSM Tracker Locator Vehicle/Van Personal Tracking Device Overview: The realtime GPS GPRS GSM tracker for car/vehicle/motorcycle tracking device spy, to achieve real-time vehicle location tracking, text messages and computer services platform to support location identification. Features: 100% brand new and high quality GSM quad-band systems worldwide Wide input voltage range: 9-36VDC Built-in overspeed alarm?to remind speeding Achieve real-time vehicle location tracking, text messages and computer services platform to support location identification ACC ignition signal detection, vehicle status prompt An external relay, remote power off the oil function Support OBD Easy Setup Support for Android, Apple phone system client remote control Specification: Color: Black Dimension:90(L) *45(W) * 13.5(H) mm Weight:45g Operation Temperature:-30? - 70? Operation Voltage: 9-36vDC Humidity:20% - 80% GSM Frequencies:850/900/1800/1900 MHz GPRS:Class 12 GPS Sensitivity:-159dBm Acquisition Sensitivity: -144dBm Position Accuracy:10m GPS positioning time: Cold start -38s (Open sky), Warm start -32s, Hot start -2s (Open sky) GSM/GPS Antenna: Built-in design LED Indicator:GSM-green, GPS-blue, Power-red Data Transmit:TCP, SMS Mileage Report:Track by time/distance interval Card:ordinary sim card (2G GSM Card)(NOT INCLUDED) Note: 1.The GPS tracker must be installed under professional personnel. 2.Please install the device in the hidden place as followings: Under front windshield,In front instrument panel,Under back windows. 3.Avoid being placed with singal radiators like reverse sensor. 4.The device has GSM antenna and GPS antenna inside. Please ensure the receiving side of the device is face up and without metal cover.

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Features: LC 5A Over-current protection Sensor module uses current transformer to collect the AC signal to achieve the relay over-current signal output within 0-5A. Relay pull while over-current, relay released while not over-current. Users can use the relay COM, NC, NO three ports to control the external circuit on and off, in order to achieve over-current protection. Functions: -Current detection resolution can change the parameter of resistance parameters; -Output over-current switching signal output; -Over-current signal setting critical point adjustable, Specifications: Operating voltage: DC12V Operating current: Operating frequency range: 20Hz ~ 400Hz Output mode: switch signal output Maximum detection wire diameter: 5.2mm Mounting hole: hole diameter is 3mm, hole distance is 52.5mm Operating environment: -40 ￢ﾄﾃ ~ +85 ￢ﾄﾃ The current detection range:AC0.3A-5A Board size: 38 * 44mm The Board Description: VCC: Operating voltage positive; GND:Operating voltage negative; NO: Normally open, the relay pulls before the NO and COM disconnect, short-circuit after the suction; COM: common, relay common interface; NC: Normally closed, the relay before the NC and COM short-circuit, pull off after. Using Instructions: By setting the potentiometer to set the overcurrent protection point, the clockwise adjustment reduces the detection current. As bellows: 1. Measured the wire through the current transformer, connect VCC and GND to DC12V power supply; 2. Adjust the potentiometer, when you hear the sound of the relay pull (can be measured with a multimeter COM and NO whether was turned on, if connected to the relay means activated), then reduce or cut off the current flowing that through the tested wire, if the relay release at this time that over-current protection point has been identified (available to multimeter COM and NC measurement whether is connected, if connected to the relay means been released); 3. When reduce or cut off the current flowing through the wire, the relay is not released, will still need to continue to adjust the potentiometer to find the over-current protection point. Package Included: 3 x 5A 12V Relay Module 3Pcs DC 12V 5A Overcurrent Protection Sensor Module AC Current Detection Relay Module Switch Output 3Pcs DC 12V 5A Overcurrent Protection Sensor Module AC Current Detection Relay Module Switch Output 3Pcs DC 12V 5A Overcurrent Protection Sensor Module AC Current Detection Relay Module Switch Output

Description Overview This sensor module have great adaptive capability of the ambient light, having a pair of infrared transmitter and the receiver tube, the infrared emitting tube to emit a certain frequency, encounters an obstacle detection direction (reflecting surface), infrared reflected back to the receiver tube receiving, after a comparator circuit processing, the green LED lights up, while the signal output will output digital signal (a low-level signal), through the potentiometer knob to adjust the detection distance, the effective distance range 2 ~ 80cm working voltage of 3.3V-5V. The detection range of the sensor can be adjusted by the potentiometer, with little interference, easy to assemble, easy to use features, can be widely used robot obstacle avoidance, obstacle avoidance car assembly line count and black-and-white line tracking and many other occasions. Features When the module detects obstacles in front of the signal, the circuit board green indicator light level, while the OUT port continuous output low-level signals, the module detects a distance of 2 ~ 80cm, detection angle 35 °, the detection distance can be potential adjustment with adjustment potentiometer clockwise, the increase in detection distance; counterclockwise adjustment potentiometer, the detection distance decreased. The sensor active infrared reflection detection, target reflectivity and shape of the detection distance of the key. The black minimum detection range, white maximum; small area object distance is small, a large area from the large. The sensor module output port OUT can be directly connected with the microcontroller IO port can also be driven directly to a 5V relay; Connection: VCC-VCC; GND-GND; OUT-IO The comparator using LM393, stable; 3-5V DC power supply module can be used. When the power is turned on, the red power LED is lit; With the screw holes of 3mm, easy to install; Board size: 3.1x1.5cm Each module in the delivery has threshold comparator voltage adjustable via potentiometer, special circumstances, please do not adjust the potentiometer. Specifications Interface(3-wire) VCC external 3.3V-5V Voltage (can be directly connected with the a 5V microcontroller and 3.3V microcontroller) GND external GND OUT board digital output interface (0 and 1) LEDs: Power Indicator, Switch Indictor More Products View More Products

Features: LC 5A Over-current protection Sensor module uses current transformer to collect the AC signal to achieve the relay over-current signal output within 0-5A. Relay pull while over-current, relay released while not over-current. Users can use the relay COM, NC, NO three ports to control the external circuit on and off, in order to achieve over-current protection. Functions: -Current detection resolution can change the parameter of resistance parameters; -Output over-current switching signal output; -Over-current signal setting critical point adjustable, Specifications: Operating voltage: DC12V Operating current: Operating frequency range: 20Hz ~ 400Hz Output mode: switch signal output Maximum detection wire diameter: 5.2mm Mounting hole: hole diameter is 3mm, hole distance is 52.5mm Operating environment: -40 ??~ +85 ??/span> The current detection range:AC0.3A-5A Board size: 38 * 44mm The Board Description: VCC: Operating voltage positive; GND:Operating voltage negative; NO: Normally open, the relay pulls before the NO and COM disconnect, short-circuit after the suction; COM: common, relay common interface; NC: Normally closed, the relay before the NC and COM short-circuit, pull off after. Using Instructions: By setting the potentiometer to set the overcurrent protection point, the clockwise adjustment reduces the detection current. As bellows: 1. Measured the wire through the current transformer, connect VCC and GND to DC12V power supply; 2. Adjust the potentiometer, when you hear the sound of the relay pull (can be measured with a multimeter COM and NO whether was turned on, if connected to the relay means activated), then reduce or cut off the current flowing that through the tested wire, if the relay release at this time that over-current protection point has been identified (available to multimeter COM and NC measurement whether is connected, if connected to the relay means been released); 3. When reduce or cut off the current flowing through the wire, the relay is not released, will still need to continue to adjust the potentiometer to find the over-current protection point. Package Included: 3 x 5A 12V Relay Module

Specifications: Working voltage: DC 3.8V-5.5V Working current (5V): typical current 6mA Input and output signals (3 lines): GND, VCC is power, and VCC is 3.8V-5.5V Obstacle detection time (range from obstacle-free to obstacle-free or obstacle-free to obstacle-free): Working Principle: Sensors actively emit infrared light, according to reflected light detection, if detected obstacles, OUT foot output 0, otherwise 1. Detection distance (test environment, indoor, maximum power, Voltage 5V, power consumption 6.5ma): 1. white walls: 100cm 2. IBM black computer cover: 20cm 3.1 fingers: 18cm 4. palm: 30cm 5. a transparent pearl pen: 20cm Features: The new version has been greatly improved and has been gradually improving. 1. super miniature and designed with mechanical mounting holes. 2. Low power consumption, wide operating voltage range. The transmitting signal adopts modulation signal, long distance, good anti-jamming, and can work outdoors under non-direct sunlight (the distance will be shorter). 3. distance adjustable, ranging from 3cm-100cm. 4. Obstacle avoidance uses window technology to avoid the problem of critical zone. The sensor works stably. The user can directly use the output signal without considering the signal jumping. Usage: There are many precise adjustable potentiometers on the board, which can be adjusted according to the use environment. The adjusting range is from 3cm to 100cm. Because it is a reflection principle, it is related to the specific reflection target and can be adjusted according to the situation. The circuit board has a red LED that emits light when obstacles are detected. OUT output continues to be low. Obstacle-free is OUT output continues to be high. Sensor active infrared reflectance detection, so the reflectance and shape of the target is the key to the detection range, in which the black detection range is the smallest, the white is the largest; small area object distance, large area distance. Package Included: 3 x Obstacle Avoidance Sensor

Product Usage: The RF detector is made of ADI's AD8318 chip, the design of the power supply voltage regulator circuit such that the detection accuracy tends to official data, the operating frequency range is 1-8000MHz, can detect -65 to 5dBm RF signal and with DC voltage output the detected signal strength (in dBm, logarithmic detection), so the RF signal is converted into a DC voltage output. RF signal corresponding to the amplitude or power of the output voltage. You can do signal strength indicator RSSI, spectrum analyzer, gain control. Technical Specifications 1. The operating frequency: 1-8000MHz 2. Dynamic Range: -65dBm to + 5dBm 3. The detection slope: -25 mV / dB (TPY) 4. The detection output voltage range: 0.5--2.1V 5. Power supply voltage: 7-15VDC (containing the power regulator circuit) 6. The input impedance: 50 ohms 7. RF interface: standard SMA female Package included: 1 x 1-8000MHz AD8318 RF Logarithmic Detector

Product Usage: 1, the meter pulse data sampling 2, fax machine shredder paper detection 3, obstacle detection 4, black and white line detection Product parameters: Infrared reflection sensor: TCRT5000 Detection reflection distance: 1mm~25mm Working voltage: 5V Output form: digital signal (0 and 1) Installation: with fixing bolt holes Small board PCB size: 3.5cm x 1cm Single weight: 4.5g Features: The infrared emitting diode of the TCRT5000 sensor continuously emits infrared rays. When the emitted infrared rays are not reflected back or reflected back but the intensity is not large enough, the infrared receiving tube is always in the off state, and the output end of the module is low level, indicating The diode is always off; when the detected object appears in the detection range, the infrared light is reflected back and the intensity is large enough, and the infrared receiving tube is saturated. At this time, the output end of the module is high, indicating that the diode is illuminated. Wiring: 1. VCC: Connect the positive pole of the power supply (5V) 2, GND: connected to the negative power supply 3, OUT: high / low level switching signal (digital signal 0 and 1) Package Included: 20 x TCRT5000 tracing module (tested, electrostatic bag packaging)

Features: - Sensitive material MQ-9 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2). - Detection method using low temperature cycling (1.5V heating) to detect carbon monoxide, conductivity sensors with carbon monoxide in the air increased with increasing gas concentration, spurious adsorption at high temperatures (5.0V heating) detection of combustible gases methane, propane and cryogenic cleaning gases. - Simple circuit can be used to change the conductivity, concentration of the gas is converted to the corresponding output signal. - MQ-9 high gas sensor for carbon monoxide, methane, liquefied petroleum gas sensitivity, the sensor can detect a variety of gases containing carbon monoxide and flammable, is a low-cost sensors for a variety of applications. Speciffications: 1. It adopts high quality double panel design with power indication and TTL signal output indication; 2. It has DO switch signal (TTL) output and AO analog signal output; 3. The TTL output valid signal is low. (When the output is low, the signal light is on, it can be directly connected to the MCU or relay module) 4. The voltage of the analog output, the higher the concentration, the higher the voltage. 5. It has good sensitivity to gas and natural gas detection. 6, there are four screw holes for easy positioning; 7, product dimensions: 32 (L) * 20 (W) * 22 (H) 8, has a long life and reliable stability 9, fast response recovery characteristics Electrical Performance: Dection of gas: Carbon monoxide flammable gas Dection of Concentration:10-1000ppm(CO);100-10000(Gas) ppm Input voltage: DC5V Power consumption (current): 150mA DO output: TTL digital quantities 0 and 1 (0.1 and 5V) AO output: 0.1-0.3V (relatively non-polluting), the highest concentration voltage is about 4V Using the chip: AT89S52 Crystal: 11.0592MHZ Baud rate: 9600 Compilation environment: Keil Special Reminder: After the sensor is energized, it needs to be preheated for about 20S, and the measured data is stable. The heating of the sensor is a normal phenomenon, because there is a heating wire inside, if it is hot, it is not normal. Package Included: 3 x MQ-9 Gas Sensor Module

Paradox NV780 Digital Outdoor Dual Side-View Detector Paradox NV780 Digital Outdoor Dual Side-View Detector (wired) and NVR780 (wireless) were designed to provide a pre-entry protection solution while keeping the perimeter free for movement without generating false alarms. The NV780/ NVR780 provides early warning detection, before intruder entry, with excellent exterior/interior wall and window protection.Available in both wired (relay and/or Paradox EVO BUS) and wireless versions (433 MHz or 868 MHz), these rugged indoor/outdoor detectors incorporate two passive infrared side-by-side detectors, each containing two independent dual element sensors, optics, and electronic channels.The optics are specially designed to provide multiple narrow beams (two pairs per side, eight total) for excellent detection and false alarm rejection, covering up to 12m (39ft) for each side. The NV780/ NVR780 are configurable to report as a single unit (2 sides of the unit report to a single zone output) or dual units (each side reports to a separate zone). The NVR780 provides extended battery life operation with Paradox Effi+ circuit. Developed for outdoor conditions with bright LED indication on each side, and buzzer for detection verification. The optics offer simple and easy independent low beam adjustment for coverage flexibility. Advanced Digital Technology Two double passive infrared motion detector with eight narrow detection beams, managed by Full Authority Digital Electronics Control (FADEC) High-resolution and full dynamic range digital signal conversion High-speed, advanced algorithm digital signal processing Digital EMI / RFI interference rejection True Pet Immunity, up to 40kg (90lb) Advanced Optical Technology 4x dual element sensors arrangement High efficiency long focal point (1.77”) lens, providing longrange narrow beams 2 pairs of narrow beams per side provide 2x signals per protected area crossing for increased“catch” and false alarm rejection Combination optics of mirror reflector and 2nd generation Fresnel“LoDiff” Lens Increased white light rejection Easy Installation and Setup Single or Dual Zone operation modes: two sides can report to a single zone or to two separate zones Optical and digital range adjustments Bright LED and buzzer indicator for clear adjustment feedback No need for PCB removal Wall mount, with built-in level tool In-field firmware upgradable via serial port Immediate Perimeter Protection Paradox NV780 Digital Outdoor Dual Side-View Detectors distinct beam pattern creates a narrow, 24m (78.8 ft.) long detection zone (12m / 39.4 ft. each side), to protect wide horizontal areas such as a house’s perimeter. To avoid detection of unwanted objects, it will only trigger an alarm if both beams are crossed. Adjustable Detection Range Paradox NV780 Digital Outdoor Dual Side-View Detector will only trigger an alarm if both beams are crossed. The detection range can be adjusted (both vertically and horizontally), to avoid detection of unwanted objects. Each side’s lower beam can be independantly adjustled within two positions (see fig.1). In addition, both beams’ distance from the wall can be adjusted (horizontally) from 0° to 3° degrees (see fig.2).