Tachometer light alarm

Scope: Mainly used in battery (9V or 12V) voltage monitoring, simple and practical, support sound and light alarm. Features: When the buzzer low voltage will "DiDiDi" sounds and the red LED lights up, when the battery voltage rise above to the set value, buzzer will stop alarm. Size: 2.9 x 3 cm The main chip: LM358 9V Battery: When a battery over-discharge (battery voltage drops below about 8V), the red lights and the buzzer calling to achieve sound and light alarm, to achieve control battery discharge status, prevent over-discharge battery, and damage battery; 12V Battery: When a battery over-discharge (battery voltage less than 10.4V), the red lights and the buzzer calling to achieve sound and light alarm, to achieve control battery discharge status, prevent over-discharge battery, and damage battery; Advantages: With a sound and light alarm, simple and practical. The module input with reverse protection, if reverse polarity power input will not burn. But without overvoltage protection, if the input exceeds 15V, the chip above the module will burn out. Adjustment method: 9V Battery: Input 9V, the LM358 voltage adjustment between 2 feet and 4 feet to about 5.78V, the alarm voltage is 8V (we has set it before shipment, so you don't need to adjust it again). Clockwise adjustment, 2 feet and 4 feet voltage is reduced, the sensitivity increased. 12V Battery: Input 12V, The LM358 voltage adjustment between 2 feet and 4 feet to about 6.05V, the alarm voltage is 10.4V (we has set it before shipment, so you don't need to adjust it again). Clockwise adjustment, 2 and 4 feet voltage is reduced, the sensitivity increased. Package includes: 3 x Battery Over-discharge Protection Module

Scope: Mainly used in battery (9V or 12V) voltage monitoring, simple and practical, support sound and light alarm. Features: When the buzzer low voltage will "DiDiDi" sounds and the red LED lights up, when the battery voltage rise above to the set value, buzzer will stop alarm. Size: 2.9 x 3 cm The main chip: LM358 9V Battery: When a battery over-discharge (battery voltage drops below about 8V), the red lights and the buzzer calling to achieve sound and light alarm, to achieve control battery discharge status, prevent over-discharge battery, and damage battery; 12V Battery: When a battery over-discharge (battery voltage less than 10.4V), the red lights and the buzzer calling to achieve sound and light alarm, to achieve control battery discharge status, prevent over-discharge battery, and damage battery; Advantages: With a sound and light alarm, simple and practical. The module input with reverse protection, if reverse polarity power input will not burn. But without overvoltage protection, if the input exceeds 15V, the chip above the module will burn out. Adjustment method: 9V Battery: Input 9V, the LM358 voltage adjustment between 2 feet and 4 feet to about 5.78V, the alarm voltage is 8V (we has set it before shipment, so you don't need to adjust it again). Clockwise adjustment, 2 feet and 4 feet voltage is reduced, the sensitivity increased. 12V Battery: Input 12V, The LM358 voltage adjustment between 2 feet and 4 feet to about 6.05V, the alarm voltage is 10.4V (we has set it before shipment, so you don't need to adjust it again). Clockwise adjustment, 2 and 4 feet voltage is reduced, the sensitivity increased. Package includes: 10 x Battery Over-discharge Protection Module

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Feature: With simple circuit, easy soldering, this kit is very suitable for the teenagers to learn circuit and soldering. The feature of this kit is small size, high sensitivity. It uses the sound and light to finish the alarm, and it can be used to detect the temperature. In conclusion, it has high practicability Circuit introduction: The circuit of this suite is very simple, it is consisted of three triodes (two S09014 and one S9015), one active buzzer, one LED and one thermistor. Adjust the potentiometer to set the temperature threshold value, use two S9014 triode to drive the buzzer, when the temperature is higher than the threshold value, the LED lights and the buzzer alarms; when the temperature is lower than the threshold value, the LED does not light, the buzzer does not alarm. Parameter: Working voltage: DC3-5V PCB size: 21 x 30mm Schematic diagram:

Basic alarm sensor, has built in camera at 67.5°, has video,Mic audio, flood light output, siren output, alarm control unit output. This is a hidden camera device. Can be used to spy, or as nanny cam. Simply add to your current cctv or PC. Swap for tool box or why? Tags:spy,nanny cam, cctv,camera monitor device, pir ccd camera.

 Features: 360° Panoramic: featured with 360° surveillance, every angle or your house can be reached and totally under your control 3D Vision Experience: 3D vision experience makes everything in your house real and accessible Remote Monitoring: no matter where you are, you're able to remotely check your home condition via smartphone or tablet if only there is internect connection 128GB TF Card Supported: support up to 128GB(Mini 16GB) micro SD card(TF card) TF card not included Two-Way Communication: Built in speaker and microphone, it supports instant talk between APP and camera end Motion Detection & Intelligent Alert: Alarm will occur when motion detected and real-time notification will be sent to youre smartphone or tablet pc 50000 Hours' LED Life Span 3 x 1W LED Light provides you bright illumination and works perfecly great like a common bulb, but with longer life span up to 50000hours Operation Tips: Scan QR code in the manual in APP store(iOS) or Google play(Android), download & install IPC360 app Specification: General: Dimension: Max diameter 80mm, height 137.8mm Lamo Socket: E27 Power Supply: 100~240V AC, 50~60Hz Power Consumption: 6W Illumination: 3 x 1W LED Light Camera: Field of View: 360° Image Sensor: Progressive Scan CMOS Angle of View: 180° hemisphere Lens: 185°/F2.2/1.29mm Fisheye Lens Two Way Audio: Support Motion Detection: Support Advance Event Management: Triggered by motion, notification broadcast to APP SD Card: support up to 128GB micro SD card(TF card), TF card not included Network: Protocol Support: WiFi(IEE802.11.a/b/g/n) Frequency: 2.4GHz~2.4835GHz Video: Video Codec: H.264 Audio Codec: AAC Resolution: 1280*1024(1.3MP) Video Stream 1(HD): 1.3MP(1280*1024) Video Stream 2(Fluency): D1 (704*576) Frame Rate: 25FPS at maximum resolution Environment: Operation Temperature: -15~50 Storage Temperature: -15~50 Operation Humidity: 10%~95% with no condensation Note: 1. Please read the manual carefully for correction operation before use 2. Make sure your router supports 2.4G WiFi as the camera does not support 5G WiFi Package Includes: 1 x E27 WiFi Camera 1 x English Manual

Features:   -360 degrees panoramic view. -Support motion detection. -Support paging browsing, automatic round tour. -You can always log APP watch monitor playback. -You can manually control the lights for your phone. Specifications:   Color: White Material: ABS (Acrylonitrile Butadiene Styrene) Resolution: 1280 x 960 Pixel: 1.3 Million Pixels Interface: E27 screw connector Power Supply: AC 100-240V, 50/ 60Hz Network Protocol: TCP / IP, UDP / IP, HTTP, SMTP,  FTP, DHCP, DDNS, NTP, PPPOE Two-way voice: Support Wifi: Support Alarm Action: Mobile APP push screenshot Video format: 1.3MP/2MP/3MP/5MP (Optional) Wifi protocol: IEEE 802.11b/g/n Local storage: TF card, maxumum support128G (NOT Included)   Package included:   1 x Wifi Bulb Camera 1 x User Manual Detail Pictures:

Features: -360 degrees panoramic view. -Support motion detection. -Support paging browsing, automatic round tour. -You can always log APP watch monitor playback. -You can manually control the lights for your phone. Specifications: Color: White Material: ABS (Acrylonitrile Butadiene Styrene) Resolution: 1280 x 960 Pixel: 1.3 Million Pixels Interface: E27 screw connector Power Supply: AC 100-240V, 50/ 60Hz Network Protocol: TCP / IP, UDP / IP, HTTP, SMTP, FTP, DHCP, DDNS, NTP, PPPOE Two-way voice: Support Wifi: Support Alarm Action: Mobile APP push screenshot Video format: 1.3MP/2MP/3MP/5MP (Optional) Wifi protocol: IEEE 802.11b/g/n Local storage: TF card, maxumum support128G (NOT Included) Package included: 1 x Wifi Bulb Camera 1 x User Manual Detail Pictures:

Features: Color: White Size: Approx.14 x 4cm/5.51 x 1.57'' Power Supply: 1 x 9V Battery (Not Included) Quiescent Current: ≤15μA Alarm Current: ≤ 30 mA Power Indicator: The red LED intermittent light Alarm Indication: The red LED flashes quickly Alarm Sound Pressure: ≥ 85 dB/m Operating Temperature: -10 ￢ﾄﾃ-+50 ￢ﾄﾃ Ambient Humidity: Less than or equal to 95% RH (no condensation) Alarm Mode: Sound and light alarm Detection Area: 1. Installation height of 6-12m, detection area of 40 square meters. 2. Installation height of less than 6m, detection area of 40 square meters. 3. Using a special structural design and intelligent processing controller to deal with photoelectric signals. 4. With dust, pest control, anti-external light interference and other functions. 5. On the slow smoldering or burning out the visible smoke have a better response. 6. Applicable to residential, shopping malls, restaurants, warehouses and other indoor environmental monitoring. Package Included: 1 x Smoke Sensor Detector Fire Alarm 1 x Screw Set 1 x User Manual Detail Pictures: