Chapter 1 – Description & Specifications
Multi-Tech Systems, Inc. MultiModem GSM/GPRS User Guide 11
Specifications

General Specifications

Power Requirements 5 V to 32VDC; 400mA Average @5V, 1A Peak @ 5V
Mechanical Dimensions & Weight 4.3" w x 2.4" h x 0.94" d; 4.1 oz.
(11 cm x 6.1 cm x 2.4 cm; 115 g)
Connectors & Fasteners Antenna Connection type: SMA jack
Serial Connector: 15-pin RS232 SUB D female (DE15S)
Pins: RS232 link, audio link, BOOT, RESET
Power Connector: 2.5mm miniature power jack
SIM receptacle: (standard)
Operating Temperatures -30 to +70°C
Certifications CE Mark
EMC: FCC Part 2, 15, 22, 24, EN 55022 & EN 55024
Safety: UL 60950, EN 60950

Electrical Characteristics

Switching the GSM modem on/off The device is permanently powered (when connected to the
power supply).
Voltage Range Voltage range : 5 to 32V DC
GND : 0V
Overvoltage and Undervoltage Correct operation of the Wireless MultiModem in
communication mode is not guaranteed if input voltage falls
below 5V.

Input/output electrical characteristics for external connections

GSM/GPRS 850/900 GSM/GPRS 1800/1900
Parameters Typ. Typ. Unit
Input Supply Voltage 5 13.2 32 513.2 32 V
Input peak supply current in comm.
mode at Pmax 1 .4 .2 1 .4 .2 A
Input average supply current in
comm. mode at Pmax 360 150 75 300 125 70 mA
Input average supply current in idle
mode 30 10 10 30 10 10 mA