GPRS GSM GPS BDS A9G Development Board GPS Antenna SMS Voice Wireless for Smart Watch at

Description: Basic phone / SMS, GPRS networking communications, GPS / BDS dual-mode positioning capabilities 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 Can connect external 30W / 200W camera Can add a traditional slot machine Debugging: Use USB to TTL serial cable, VUSB ? 5V; GND ? GND; AT_TX ? RX; AT_RX ? TX Use USB cable to power the board,GND?GND?AT_TX?RX?AT_RX?TX Use lithium battery to power the board, VBAT?(3.3v-4.2)V; GND?GND?AT_TX?RX?AT_RX?TX(Press power_key button for 2S) Default Baudrate is 115200,in the module initial power-on, you can modify the module's baud rate Application: Use GPRS + GPS, as well as acceleration sensors for vehicle immobilizer Remote monitoring intercom using GSM and microphone / speakers Use GPRS / GSM + GPS, for Smart watch with 1.54 "capacitive touch screen,heart rate oximeter sensor, 1.54-inch capacitive touch screen monitor the elderly Use GPRS + TF + camera extension board remote monitoring camera Wechat payment slot machine scheme using slot machine Using onboard features, custom device based on Lua programming Package Included: 1 X GPRS GSM GPS BDS A9 Development Board 1 X GSM Antenna 1 X GPRS Antenna