The A9G development board is a multi-functional development board based on the A9G GPRS/GSMandGPS/BDS module. It can be used to verify the basic communication functions and peripheral functions of the A9G module. The A9G development board has basic phone calls/text messages, GPRS network communication, and GPS/BDS dual-mode positioning functions. The A9G development board is equipped with lithium battery charging management, microphone, speaker interface, USB communication interface, multiple user buttons/LEDs, TF card slot, acceleration sensor, SPI interface, I2C2 interface, and ADC interface. A9G development board camera expansion board, which can be connected to an external 30W/200W camera. A9G development board is a coin-operated machine expansion board that can be connected to a traditional coin-operated machine. Based on the above functions, A9G can be used for prototype development and verification of a of peripherals: the development board is just a basic core board. To achieve the above functions, you need secondary development. Please don't take pictures if you mind! Vehicle anti-theft device using GPRSandGPS and acceleration sensor. Remote monitoring intercom using GSM and microphone/speaker Smart watch using GPRS/GSMandGPS, 1.54-inch capacitive touch screen Elderly monitoring watch using GPRS/GSMandGPS, heart rate and blood oxygen sensor, 1.54-inch capacitive touch screen Remote monitoring camera using GPRSandTFand camera expansion board WeChat payment coin machine solution using coin machine expansion board Use onboard functions and custom devices based on Lua programming Colour:As Shown Material:Plastic Package Contents: 1 set x A9G development board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.