Sony Ericsson’s GM47/GM48 GSM/GPRS Radio Device comes fully-
loaded with a range of GSM/GPRSvoice and data features, and all in a
compact unit. Optimized for M2M communications, the GM47/GM48
features an intrinsic TCP/IP stack enabling effective use of GPRS. The
GM47/GM48 is configurable, to enable optimum usage of the extensive range
of input/output pins provided, making it easy to adapt your M2M solution.
The GM47/GM48 was designed to be integrated. With dimensions of 50 mm x
33 mm x 7.2 mm, the GM47/GM48 will fit into the smallest of spaces

Output power:
Class 4 (2W) @ 900 MHz
Class 1 (1W) @ 1800MHz

Power supply:
3.4 – 4 VDC
250mA average current in voice communication (CS, average)
350mA average current in data communication (GPRS 4+1)
<5mA average current in idle mode

Overall dimensions (excluding connectors):50 x 33 x 7.2mm
Operating Temperature:-30°C to +75°C
Weight: 18.5g (including shielding)
• Single antenna interface (50 ohm MMCX)
• Single 60 pin board-to-board connector including:
• Power supply connection
• 3/5V SIM interface with SIM detection
• 2 x microphone inputs and 2 speaker outputs
• Up to 9 x General Purpose I/Os, 4 x Digital Outputs, 1 x Digital Input*
• RS232 serial link (2.7V) supporting:
• Remote control by AT commands (GSM 07.07 and 07.05)
• Serial baud rate from 1200 to 460,800 bits/s
• 2 x other General Purpose Serial Interfaces (in
addition to serial link used for AT commands)
• Up to 5 x Analogue to Digital Converter
• 1 x Digital to Analogue Converter
• 1 x buzzer output