1.The A9G development board is a versatile development board based on EMC's A9G GPRS / GSM + GPS / BDS module that can be used to validate the basic communication functions and peripheral functions of the A9G module. 2.A9G development board with the basic phone / SMS, GPRS networking communications, GPS / BDS dual-mode positioning capabilities. 3.A9G development board contains a lithium battery charging management, microphone, speaker interface, USB communication interface, multiple user keys / led, TF card slot, accelerometer, SPI interface, I2C2 interface, ADC interface. 4.A9G development board camera expansion board, an external 30W / 200W camera. 5.A9G development board slot machine expansion board, can add a traditional slot machine. A9G can be used for a variety of peripheral prototyping verification:Use GPRS + GPS, as well as acceleration sensors for vehicle immobilizer. Remote monitoring intercom using GSM and microphone / speakers Smart watch with 1.54inch capacitive touch screen using GPRS / GSM + GPS Use of GPRS / GSM + GPS, heart rate oximeter sensor, 1.54-inch capacitive touch screen monitor the elderly Use GPRS + TF + camera extension board remote monitoring camera Using onboard features, custom device based on Lua programming Colour:As Shown Material:PC Package Contents: 5 x A9G Development Board(Due to different product batches, the appearance may vary, which does not affect the use) 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.