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Welcome to the ESP-12S-A9-A9G-GPRS-Node-v1.0 wiki!
WiFi+Cellular + GPS tracking, all in one? Oh yes! Introducing ESP-12S A9G GSM GPRS+GPS IOT Node, an all-in-one cellular phone module with WiFi module with that lets you add location-tracking, text, SMS and data to your project. This IOT node has both WiFi and GPRS support. That means it's perfect for just about any wireless or Internet-connected project.
ESP8266 @ 80MHz with 3.3V logic/power
4MB of FLASH (32 MBit)
Built in WiFi 802.11 b/g/n
3.3V regulator with 500mA peak current output
Auto-reset support for getting into bootload mode before firmware upload
4 x GPIO pins - can also be used as I2C
1 x analog inputs 3.3V max
Built in 500mA LiPoly charger with charging status indicator LED
Reset button
Quad-band 850/900/1800/1900MHz - connect onto any global GSM network with any 2G SIM
Fully-integrated GPS
Send and receive SMS messages
Send and receive GPRS data (TCP/IP, HTTP, etc.)
Support standard GSM07.07, 07.05 AT commands and Ai-Thinker extended commands
Support GPS, BD
Nano SIM Card holder