Uses SIM300 GSM module transmission.
? Operating Voltage: 7 ? 15V AC or DC (board has onboard rectifier.
? Comes with an onboard wire antenna for better reception.
? Can be used for Data/Fax, GSM based Voice communications, TCP/IP stack, GPRS and SMS
? SIM300 allows an adjustable serial baud rate from 1200 to 115200 bps (9600 default).
? Provides RS232 interface for connection to computers and other devices.
? Lithium Battery holder
? Can add external antenna with SMA connectors.
? Power, RING and Network LEDs for easy debugging.