The A9G development board is a multi-functional development board based on the A9G GPRS/GSM+GPS/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 GPRS+GPS and acceleration sensor. Remote monitoring intercom using GSM and microphone/speaker Smart watch using GPRS/GSM+GPS, 1.54-inch capacitive touch screen Elderly monitoring watch using GPRS/GSM+GPS, heart rate and blood oxygen sensor, 1.54-inch capacitive touch screen Remote monitoring camera using GPRS+TF+ 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.