GSM/GPRS module MC55
Features
 Tri Band GSM/GPRS 900/1800/1900MHz
 Compliant to GSM phase 2/2+
 GPRS Class 10
 Output power: Class4 2W for EGSM900
                      Class2 1W for GSM1800/GSM1900
 Control via AT commands
 TCP/IP stack
 SIM application tool kit
 Supply voltage range: 3.3-4.8VDC
 Temperature range: -20 to +55 (operational functionality)
                      -40 to +85 (storage temperature)      
 Dimensions: 35x 32.5x 3.1 mm
 Weight: 5.5g
 Voice: FR/EFR/HR/AMR, noise suppression and echo cancellation
              PCM audio, Emergency calls
 SMS: Text and PDU mode, Point to point (MO/MT), Cell broadcast
 DATA: non transparent, CSD up to 14.4kbps, USSD,
 Interfaces: 2xUARTs, RF connector, 50 pin system connector,
              SIM card interface, Keypad and LCD, etc.

Accessories
 GSM/GPRS antennas
 50 pin system connector
 SIM card holder
 U.FL to SMA RF cable