Name: GSM GPRS Modem
Model: GM-01
The GSM modem is a self-contained E-GSM/GSM-GPRS 900/1800 dual-band modem and is GPRS class 10 capable. It is based on a SIMCOM SIM300 module.

This GSM modem supports the following transmissions:
Data,
Fax,
Short Messages (Point to point and Cell Broadcast),
Voice calls.

The GSM modem comprises several interfaces:
LED function indicating the operating status,
External antenna (via SMA connector),
RS232 Serial (via 9-pin SUB HD connector),
Power supply (via 2.5mm DC power jack),
SIM card holder.

Features of this GSM modem:
2 Watts E-GSM 900 radio section.
1 Watt GSM1800 radio section.
Echo Cancellation + noise reduction.
Full GSM or GSM / GPRS software stack.
Hardware GPRS class 10 capable.
Complete shielding.
A DC Power supply.
A RS232 serial link.
A 1.8V / 3.3V SIM interface.