5pcs module

5Pcs HC-12 433 SI4463 Wireless Serial Module Remote 1000M With Antenna Note: HC-11 cannot communicate with the HC-12, they work independently, in pairs Features: Supply voltage: 3.2V~5.5V. (If the module you want to work long hours in the emission state, it is recommended that when the supply voltage exceeds 4.5V threaded a 1N4007 diode to prevent module built-in LDO heated) Default address range (open field test): About 600m (maximum communication distance adjustable reach 1000m, the baud rate is 5000bps) Default idle current: 16MA (In different working modes operating current is different) Module dimensions: 27.8 x 14.4 x 4mm Operating frequency range: 433.4-473.0MHz, up to 100 channels of communication The maximum transmit power: 100mW (settable) Module support software upgrade Default factory settings: Mode FU3, baud rate is 9600bps, communication channels CH001 (433.4M) Package included: 5 x HC-12 433 Serial module AT command set:   Module parameters, AT command set AT command is used to set the parameters of the function module and switching modules need to exit the setting mode after setting to take effect. Meanwhile, modify the parameters and functions, power-down is not lost.   Enter the command mode: The first entry mode - normal use (has the power) in the first 5-pin "SET" is set low; The second mode of entry - power, 5th pin "SET" again first set low on power. Both methods can make the module into AT command mode, release ("SET" pin is not connected low) to exit command mode. After the exit command mode, if you change the module function, the function will be cut to the appropriate state. The second way is fixed in serial format 9600, N, 1 into the AT.   Instructions: 1. AT Test instructions Example: Send module commands "AT", the module returns "OK".   2. AT + Bxxxx Change the serial port baud rate command. You can set the baud rate is 1200bps, 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps and 115200bps. The factory default is 9600bps. Example: Set the module serial port baud rate is 19200bps, please send module command "AT + B19200", the module returns "OK + B19200".   3. AT + Cxxx Change the wireless communication channel, selectable from 001 to 127 (more than 100 radio channels after the communication distance not guaranteed). The default value is 001 radio channels, operating frequency is 433.4MHz. Step channel is 400KHz, the operating frequency of the channel 100 is 473.0 MHz.   Example: Set module to channel 21, please send module command "AT + C021", the module returns "OK + C021". After exiting the command mode, the module in the first 21 channels, operating frequency is 441.4 MHz. Note: Because the wireless receiver module sensitivity HC-12 is relatively high, the baud rate is greater than when air 58000 bps, 5 must be shifted to the adjacent channel use. When the air baud rate is not greater than 58000 bps, if the short distance (10 meters) communication, but also need to stagger five adjacent channel use.   4. AT + FUx Change the module serial pass-through mode, there FU1, FU2 and FU3 three modes. Module default mode is FU3, two serial pass-through mode module must be set to the same communication. See detailed above, "wireless serial pass-through" part. Example: Send module commands "AT + FU1", the module returns "AT + OK".   5. AT + Px The default setting is 8, maximum transmit power, communication distances. Transmit power level is set to 1, the minimum transmission power. In general, the transmission power of each drop 6dB, communication distance will be reduced by half. Example: Send module commands "AT + P 5", the module returns "OK + P5". After exiting the command mode, the module transmit power is +11 dBm. Package included: 1 x HC-12 module

5pcs HC-05 Wireless Bluetooth Serial Module With Baseplate For Arduino Note: This module does not suitable for IOS system. Pin serial port descriptions: PIO8 connect LED, indicates the status of working, after powered the module flashing, different states in different flashing intervals. PIO9 connect LED, indicates successful connecting module, after successful mating bluetooth serial port, LED long lights. PIO11 state switch pin (high level) -> AT command response to the work state, low level or dangling -> Bluetooth regular work status. On module with a reset circuit, re-power to complete the reset. Main module setup steps: 1. PIO11 set high. 2. Power ON, the module into the AT command response status. 3. HyperTerminal or other serial tool, set the baud rate 38400, 8 data bits, 1 stop bit, no parity, no flow control. 4. Serial send characters "AT + ROLE = 1 r n", successful return "OK r n", which r n for carriage return. 5. PIO set low, re-power, module as the main module, automatic search from module to establish a connection. Feature: 6V - 4.5V power supply; Support connect Android phones with Bluetooth; The default baud rate: 9600 can be modified according to the data sheet; Package included: 5 x HC-05 Wireless Bluetooth Serial Module

5Pcs MAX7219 Dot Matrix Module MCU LED Control Module Kit For Arduino Specifications: A single module can drive an 8 x 8 common cathode lattice Operating voltage: 5V Size: 5 x 3.2 x 1.5 cm (L x W x H) LED color: Red With four screws hole, aperture 3mm With input and output interfaces, supports multiple modules cascade Wiring instructions: 1. The module left side as an input port and the output port on the right 2. To control a single module, just connect the input port to the CPU 3. When cascading multiple modules, the input port of the first module connect to the CPU, the output port connect to the input port of the second one, and so on. In the case of 51 MCU: VCC → 5V GND → GND DIN → P22 CS → P21 CLK → P20 Note: 1. VCC and GND is not reversed, it would burn the chip! 2. When the 51 microcontroller P0 port controlling, must be connected to the pull-up resistor, it is recommended that the resistance of 4.7K--10K 3. Please install lattice into the round hole first, and then insert the round hole to PCB board and weld. Face the side of lattice with words, from left to right pin order is 123456. PCB board 1st pin is square pad! 4. Electrolytic capacitors long-pin as positive, short-pin as negative; ceramic capacitor hsa no positive and negative points Package included: 5 x LED module 5 x Dupont line (5P-20cm)

5Pcs Socket Adapter Module Board For 8 Pin NRF24L01+ Wireless Transceiver Module Specification: Voltage: 3.3V It's for 8 Pin NRF24L01+ Module A simple socket board which is for NRF24L01 wireless module On-board AMS1117-3.3 chip It can be used with NRF24L01 wireless module Dimension: 26 x 19 x 12mm Note: Wireless module operating voltage is generally 3.3V, while the ordinary 51 microcontroller 5V, this module is wireless module with 51 single system board used in conjunction. Data Link: https://pan.baidu.com/s/1o6ug0yu Package included: 5 x Wireless Socket Adapter Module Board

5Pcs Soil Hygrometer Humidity Detection Moisture Sensor For Arduino Description: This is a summary of the soil moisture sensor can be used to detect moisture, when the soil is dry, the module outputs a high level, whereas output low. Using this sensor make an automatic watering system, so that your garden plants without people to manage. Operating voltage: 3.3V~5V. Adjustable sensitivity (shown in blue digital potentiometer adjustment) Dual output mode,analog output more accurate. A fixed bolt hole for easy installation. With power indicator (red) and digital switching output indicator (green). Having LM393 comparator chip, stable. Panel PCB Dimension: 3cm x 1.5cm. Soil Probe Dimension: 6cm x 2cm. Cable Length: 21cm. VCC: 3.3V-5V. GND: GND. DO: digital output interface(0 and 1). AO: analog output interface. Instructions for Use: 1. Soil moisture module is most sensitive to the ambient humidity is generally used to detect the moisture content of the soil. 2. Module to reach the threshold value is set in the soil moisture, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output low. 3. The digital output D0 can be connected directly with the microcontroller to detect high and low by the microcontroller to detect soil moisture. 4. The digital outputs DO shop relay module can directly drive the buzzer module, which can form a soil moisture alarm equipment. 5. Analog output AO and AD module connected through the AD converter, you can get more precise values of soil moisture. Package Included: 5 x Soil moisture detector module 5 x Probe 5 x 2P Jumper Cable

5Pcs Jog Type Touch Sensor Module For Arduino Description: This is jog type capacitive touch switch sensor module based on a touch detection IC TTP223B. Normally, the output is low level(at mode of low power consumption). When the finger touch the corresponding location, output will be high(at quick speed mode). When the module do not be touched for 12 seconds, the mode would switch to low-power mode. It can be installed in the module, such as plastic, glass, non-metallic material surface. But not cover thin sheets(metal) on the surface of the module. Just touch the correct position, it can be hidden in walls, desktops and other parts to be buttons. Allows you to remove the troubles of conventional push-type buttons. Feature: Low power consumption Can replace the traditional key With four M2 screw holes, easy for operation Specification: Operating voltage: DC 2.0V ~ 5.5V VOH: VCC 0.8V VOL: VCC 0.3V Sink current: 8mA @ VCC = 3V, VOL = 0.6V Source current: -4mA @ VCC = 3V, VOH = 2.4V Response time: 220ms (at mode of low power consumption) and 60ms (at quick speed mode) Size: 24 x 24 x 7.2mm Package included: 5 x Capacitive jpg type touch sensor module

5Pcs 5V 1-Channel H/L Trigger Optocoupler Relay Module For Arduino Description: The module uses genuine quality relay, normally open interfaces Using SMD optocoupler isolation, driving ability, stable performance The module can be high or low by a jumper setting trigger Fault-tolerant design, even if the control line is broken, the relay will not operate The power indicator (green), the relay status indicator (red) The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient Specification: Maximum load: AC 250V/10A, DC 30V/10A Trigger current: 5mA Working voltage: 5V Module size: 50 x 26 x 18.5mm (L x W x H) Four mounting bolts holes, diameter 3.1mm Module interface: DC+: positive power supply (VCC) DC-: negative power supply (GND) IN: can be high or low level control relay Relay outputs: NO: normally open relay interface COM: Common Interface Relays NC: normally closed relay interface High and low level trigger options: It is low level trigger when jumper connect to LOW pin It is high level trigger when jumper connect to HIGH pin Package included: 5 x 1 Channel H/L trigger optocoupler relay module

5Pcs 5V To 3.3V DC-DC AMS1117 800MA Step-Down Power Supply Buck Module Features: Size: 8.6 x 12.33 mm Input voltage: DC 4.2 V - 10 V Output: 3.3 V, 800 mA Note: 1.Boost modules or buck module indicate the operating voltage, Please do not exceed operating voltage, or it will be damaged easily! 2.Boost module output voltage can only be greater than or equal to input voltage, cannot be less than the input voltage! 3.Buck module input voltage must be higher than output voltage of 1.5V or 2V, otherwise it can not output enough power! 4.Automatic Adjustable Boost or Buck module has start voltage and limit working voltage, Please do not exceed them, or it will be damaged easily! 5.Cannot reverse polarity, or it will be short circuit, or will be born easily! Package included: 5 x Step-down module

5Pcs 5V Infrared Line Tracking Sensor Module For Arduino Feature: Quantity: 5pcs Size: 3.5 x 1cm Power supply: 5V DC Detector distance: 10mm Build-in Tcrt5000 Sensor NSOR Applicable to a variety of platforms including Arduino / AVR / ARM /PIC Package included: 5 x Tracking Sensor Module  

5Pcs 24 Bit AD HX711 Weighing Pressure Sensor Module For Arduino Description: The module uses 24 high-precision A / D converter chip HX711, is designed specifically for high-precision electronic scales, two analog channel input, the internal integration of 128 programmable amplifier gain of. The input circuit can be configured for electrical bridge (bridge pressure as the pressure weighing) sensor mode is ideal for high-precision, low-cost sampling front-end module   Specification: Module Operating voltage: 4.8V-5.5V Typical current: 1.6mA Size: 2.9 x 1.7 x 0.4cm Typical operating current: Operating voltage range: 2.6V ~ 5.5V Operating temperature range: -20 to +85 °C Package included: 5 x  HX711 Weighing Pressure Sensor

5Pcs Thermal Sensor Module Temperature Switch Sensor Module For Smart Car Package contains 1 X item of the smallest listed variant.

5Pcs 3.3-5V Passive Buzzer Alarm Module For Arduino Descriptions: Work Voltage: 3.3-5V With fixed bolt hole for easy installation PCB Dimension: 3.3 x 1.3cm DuPont line length: 21cm Module adopts 9012 transistor drive Feature: No oscillation source, need square wave (frequency 2K-5K) to drive. Sound frequency control, you can make a "do re mi fa sol la si" effect. Pin Definitions: VCC: 3.3V-5V GND: The Ground I/O: I/O Interface of SCM Package included: 5 x Passive Buzzer Module 5 x 3pin DuPont line

5Pcs Speed Measuring Sensor Counter Motor Test Groove Coupler Module For Arduino Application: Widely used in motor speed detection, pulse count, the position limit, etc.   Feature:   Using imported groove optical coupling sensor, width 5mm. It have the output state light, if output high level, the lights are off. if output low level,it on. If it covered,it will output high level;otherwise it output low level. Good signal and waveform, with strong driving ability for more than 15mA. The working voltage of 3.3V to 5V. Output: digital switch output (0 and 1). Equipped with a fixed bolt hole, easily install. Small board PCB size: 3.2 cm x 1.4 cm. Use the LM393 wide voltage comparer.   Specification:   The DO output interface can be directly connected to a micro-controller IO port, if there is a block detection sensor, such as the speed of the motor encoder can detect. DO modules can be connected to the relay, limit switch, and other functions, it can also with the active buzzer module, compose alarm.   Wiring specification: VCC Connect the positive 3.3 5 v power supply GND Connect power negative DO TTL switch signal output AO This module does not work Package included: 5 x Speed Measuring Sensor Module

5Pcs IR Receiver Infrared Radiation Module 38KHz TSOP4838 DIP-3 Feature: Type: TSOP4838 IR receiver module Operating frequency: 38KHz Directivity: 45 Operating temperature range: -25°C to +85°C Supply voltage range: 2.7V to 5.5V Opto case style: through hole Size: 3 x 0.5cm Package included: 5 x IR receiver module

5Pcs DC-DC Step Down Power Supply Adjustable Module With LCD Display With Housing Case Specifications: Converter type: DC-DC Input voltage: 5~23V (Best voltage 20V) Output voltage: 0V~16.5V (Continuously adjustable) Peak current: 3A Mainboard size: 50mm x 30mm x 12mm(LxWxH) Display module: STN LCD LCD size: 37.5mm x 17.0mm(LxW) LCD accuracy: 1% Conversion efficiency: 95% Load regulation S(I): Voltage regulation S(U): Package included: 5 x DC-DC step-down power suppl module 5 x Transparent shell

5Pcs A87 4 Channel Optocoupler Isolation Module High And Low Level Expansion Board For Arduino Description:1. Function: Use the low level to control the high level. Such as the use of single-chip 3V or 5V voltage control 9V or 12v voltage.2. HVCC should not exceed 24V. Output OUT1 / OUT2 / OUT3 / OUT4 output current equal to HVCC / 5.1K, absorption current 500ma.3. This module uses TLP281 chip (for Toshiba).4. Schematic:Input and output instructions: Input: IN1 / IN2 / IN3 / IN4, then the microcontroller or Arduino IO port, GND and the Arduino development board connected to the GND.IN1 / IN2 / IN3 / IN4 controls OUT1 / OUT2 / OUT3 / OUT4, respectively.Output: OUT1 / OUT2 / OUT3 / OUT4Output: HVCC: Connect the controlled high voltage positive, HGND connected to the controlled high voltage negativeUse: When IN1 is high, the corresponding OUT1 voltage is equal to HVCC, when IN1 is low, the OUT1 voltage is equal to HGNDUse examples The following example shows how to use the microcontroller's IO port to control the 24V motor rotation. Figure motor operating voltage of 24V,red ' ' that the motor power positive, black '-' that the motor power supply negative. When the microcontroller IO_0 output high, the motor rotate,when the IO_0 port output low, the motor stops rotating.Package included:5 x A87 4 Channel Optocoupler Isolation Module

5Pcs Upgraded Version 1M Flash ESP8266 ESP-01 Remote Serial Port WIFI Transceiver Wireless Module Description: Upgraded Version ESP-01,all Flash are upgraded to 1M byte.Also support Cloud service remote transmission.This Upgraded Version module are fully supports the previous firmware The latest firmware version 1.0.1, the default baud rate of 115200, (AT + CIOBAUD = to change the baud rate), because the old version of the module is 512k bytes of storage space is not enough, so we can not upgrade the 1.0. 1 version, but also support the cloud services! Note: We don't offer any supports,sorry for the inconvenience Package included: 5 x Upgraded Version 1M Flash ESP8266 ESP-01 WIFI Transceiver Wireless Module

5Pcs 1602 Character LCD Display Module Blue Backlight Description: LCD display module with blue backlight Wide viewing angle and high contrast Built-in industry standard HD44780 equivalent LCD controller Commonly used in: copiers, fax machines, laser printers, industrial test equipment, networking equipment such as routers and storage devices LCM type: Characters Can display 2-lines X 16-characters Operate with 5V DC Package includde: 5 X 1602 Character LCD Display Module Blue Backlight

5Pcs MAX7219 Red 8 Bit Digital Tube LED Display Module For Arduino MCU Description: MAX7219 is an integrated serial input / output common-cathode display drivers, which connects the microprocessor and 8 bit 7-segment digital LED display, you can also connect a bar graph display or 64 separate LED. Includes an on-chip type B BCD encoders, multi-channel scanning loop, segment word driver, but also a 8x8 static RAM that stores each data. Only one external register is used to set the current of each LED segment. A convenient four-wire serial interface can connect all common microprocessor. Each data can be addressed in the update without rewriting all displays. MAX7219 also allows the user to select each data encoding or no coding. The entire device includes a 150μA low-power shutdown mode, analog and digital brightness control, a scan-limit register allows the user to display 1-8 bit data, there is an all LED light detection mode. Feature: 0.36 inch Common cathode Only need three IO ports can drive 8 bit digital tube The module compatible of 5V / 3.3V microcontroller (51 / AVR / STM32...) PCV board four corners of the fixed copper stud, which can effectively precent short circuit accidents happen Wiring instructions (a program, for example, you can pick any IO port definition can be modified in the program): VCC to 5V, GND to GND, DIN to P00, CLK to P02, CS to P01 Note: VCC and GND do not reversed, it would burn the chip. 51 MCU P0 port requires pull-up resistor, if your device does not have a pull-up resistor can be connected to other ports data lines. Package included: 5 x MAX7219 8 bit digital tube module 20 x Copper pillar 20 x Screws

5Pcs 30A New Range Current Sensor Module Board For ACS712 Descrition: The current sensor chips: ACS712ELC-30A The module can measure the positive and negative 30 amps, corresponding to the analog output 66mV / A Pin 5V power supply, on-board power indicator Using gold plated circuit boards No test current through the output voltage is VCC / 2 Size: 31 x 13mm Note: ACS712 is based on the principle of the Hall test, please use this field to avoid impact Package included: 5 x 30A - ACS712 module

5Pcs I2C RTC DS1307 AT24C32 Real Time Clock Module For AVR ARM PIC SMD Description: 24C32 32K I2C EEPROM memory Using LIR2032 rechargeable lithium battery with charging circuit Solve the problem of no literacy of the DS1307 with backup battery Support timing 1 year of the DS1307 after fully charged Leads to the DS1307 clock pin provides a clock signal for the microcontroller Other I2C devices can be cascaded Size: 27 x 28 x 8.4mm Note: Because of shipping restrictions, we won't ship battery Package included: 5 x DS1307 module (battery is not included)

5Pcs 5V MAX485 TTL To RS485 Converter Module Board For Arduino Feature: Operating voltage: 5V On-board MAX485 chip A low power consumption for the RS-485 communication Slew-rate limited transceiver 5.08mm pitch 2P terminal Convenient RS-485 communication wiring All pins of chip have been lead to can be controlled through the microcontroller Board size: 44 x 14mm Package included: 5 x MAX485 TTL to RS485 module

5Pcs NE555 Pulse Frequency Duty Cycle Adjustable Module Square Wave Signal Generator Features: 1. As a square wave signal generator,generates a square wave signal used for experimental development. 2. Used to drive a stepper motor for generating a square wave drive signal. 3. Generate adjustable pulse for MCU. 4. Generate adjustable pulse,to control circuitry associated. 5. Size: 31mm x 22mm 6. Main chip: NE555 7. Input Voltage: 5V-15V DC. When power supply is 5V, the output current can be 15 MA around; when 12V power supply, the output current can 35 MA around 8. Input current: >=100 MA 9. Output amplitude: 4.2V V-PP to 11.4V V-PP. (Different input voltage, the output amplitude will be different) 10. Maximum output current: >=15MA (5V power supply, V-PP greater than 50%), >=35MA (12V power supply, V-PP greater than 50%) 11. Output with LED indication(low level,LED will on; high level,LED will off;low frequency, the LED flashes) 12. The output frequency range is selectable: LF file: 1Hz ~ 50Hz IF file: 50Hz ~ 1kHz High-frequency file: 1KHz ~ 10kHz HF file: 10kHz ~ 200kHz 13.The output duty cycle can fine-tune; duty cycle and frequency is not separately adjustable; adjusting the duty cycle will change the frequency Package included: 5 x NE555 Pulse Frequency Duty Cycle Adjustable Module

5Pcs Pro Mini ATMEGA328P Module 3.3V 8M Interactive Media Upgrade Version For Arduino Description:Professional version Arduino Mini Pro is a micro-controller board. It has 14 digital input / output pins (of which 6 can be used as PWM outputs), 8 analog inputs, a 16MHz resonator, a reset button, mounting hole pin head.Parameter:- 14 digital input / output port: RX, TX, D2 ~ D13,- 8 analog input port: A0 ~ A7- A pair of TTL level serial port transceiver: RX / TX- 6 PWM port: D3, D5, D6, D9, D10, D11- Use Atmega328P-AU microcontroller- Support serial download- Support external 3.3V ~ 12V DC power supply- Support 9V battery- Clock frequency:16MHz- Size: 33.3 * 18.0 (mm)Package included:5 x Module

5Pcs Adjustable XL6009 Step Up Boost Voltage Power Supply Module Converter Regulator Feature: Solidly-structured Built-4A efficient MOSFET switch, so that the efficiency up to 94% Ultra-high switching frequency, you can use a small-capacity filter capacitors that can achieve very good results Specification: Input voltage: 3.5V ~ 32V Output voltage: 5V ~ 35V Output current: rated current is 2.5A, maximum 3A (Additional heatsink is required) Load regulation: ±0.5% Voltage regulation: ±0.5% Work Temperature: -40°C ~ +125°C Maximum power: 10W Size: 4.1 x 2.1 x 1.3cm Note: This can't be used to step down voltage Package included: 5 x XL6009 step up voltage module

5Pcs CJMCU-MCP4725 I2C DAC Breakout Development Board Module   Description:    Youve always wanted to output analog voltages from a microcontroller, the MCP4725 is the DAC that will let you do it! The CJMCU-MCP4725 is an I2C controlled Digital-to-Analog converter (DAC). A DAC allows you to send analog signal, such as a sine wave, from a digital source, such as the I2C interface on the Arduino microcontroller. Digital to analog converters are great for sound generation, musical instruments, and many other creative projects!   This version of the CJMCU-MCP4725 Breakout fixes a few issues with the board including the IC footprint, the I2C pinout, changes the overall board dimensions to better fit your projects, and a few more minor tweaks. This board breaks out each pin you will need to access and use the MCP4725 including GND and Signal OUT pins for connecting to an oscilloscope or any other device you need to hook up to the board. Also on board are SCL, SDA, VCC, and another GND for your basic I2C pinout. Additionally, if you are looking to have more than one MCP4725 on a bus, the pull-up resistors on this board can be disabled just check the Hookup Guide in the Documents section below for instructions and tips on doing this.   Feature:   12-bit resolution I2C Interface (Standard, Fast, and High-Speed supported) Small package 2.7V to 5.5V supply Internal EEPROM to store settings   Package included:   5 x CJMCU-MCP4725 I2C DAC Breakout Development Board Module

5Pcs PFM Control DC-DC 0.9V-5V Step-up Power Supply Module Description: Mini PFM Control On-board input voltage indicator High conversion efficiency, maximum to 96% Any DC voltage input 0.9V ~ 5V, output 5V DC voltage can be stable, with two AA batteries input to the output current of 500-600MA, single AA battery power supply output current about 200MA On-board USB female, can supply power directly to the USB interface Small dimension Specification: Input voltage: 0.9 - 5V DC Output voltage: 5V DC PCB size: 34mm x 16.2mm Applications: DIY a mobile power supply, only need one battery, you can output 5V voltage for your phone, MP3, MP4, PSP charger, very easy. In order to power your electronic devices when your device needs 5V power supply, when you only have lithium battery, this module can be directly step-up to 5V, solve your problems. Package included: 5 x Mini PFM control DC-DC USB 0.9V-5V to 5V DC boost step-up

5pcs DIY LM7806/LM7809/LM7815 Three Terminal Regulator Module 5V Voltage Regulator Module Kit

5pcs DIY LM7806/LM7809/LM7815 Three Terminal Regulator Module 5V Voltage Regulator Module Kit Package contains 1 X item of the smallest listed variant.

5Pcs ESP8266 ESP-12 Remote Serial Port WIFI Transceiver Wireless Module Description: It run LWIP 802.11 bgn WIFI Direct (P2P),SOFT-AP Built-in TCP/IP The AT command is perfect,efficient,concise Support three modes: AP, STA and AP+STA coexistence mode Package included: 5 x ESP-12 Remote Serial Port WIFI Transceiver Wireless Module