Power by microUSB (need 2A current power), use USB-TTL debugging and send AT commands.
Compact size, breadboard friendly for prototyping.
On Board boot-up button, power LED. IPX antenna connector.
Industrial level GPRS, many industrial application you can build with it.
Notice: on back sim card socket, please notice it use normal/big/common sim card, not nano/mini/micro card, you need prepare spare sim card on normal size, or prepare card fitter.
Break away pin headers are NOT solder on it, so you can easily modified it.
This purchase is board only, you may need extra : IPX to SMA connector cable and SMA GSM antenna.