COVID-19 Response: a note to our customers. 
We're here to help.Learn More>

Login / Register Contact Us
GTM-203M-3GWA - Industrial Quad-Band 3G WCDMA Modem by ICP DAS

GTM-203M-3GWA - Industrial Quad-Band 3G WCDMA Modem

Write a review Write a review

Industrial Quad-band 3G WCDMA Modem. RS-232 (9600 bps to 115200 bps) and USB 2.0 interfaces. works on WCDMA 850/900/1900/2100 Mhz and GSM 850/900/1800/1900 Mhz frequencies. LED Indicators for 2G/3G and Power Indication. Has operating temperature range -25°C ~ +70°C (-13°F ~ +158°F)


Mfg SKU # : GTM-203M-3GWA
List Price : $799.00
Our Price : $784.00
Stock :Call for Availability
Quantity :
Application Image GTM-203M-3GWA 3G Modem

The GTM-203M-3GWA is a quad-band 3G WCDMA industrial cellular modem equipped with RS-232 and USB interfaces. It operates on Quad-band WCDMA 850/900/1900/2100 MHz and Quad-band GSM 850/900/1800/1900 MHz frequencies. The GTM-203M-3GWA supports 3G in areas where 3G service is available. This device has the ability to auto-switch between 3G or GPRS signals to maintain continuous connection.

With an integrated TCP, UDP/IP stack, the GTM-203M-3GWA is capable of working with simple controllers that have serial communication ports, which allows easy connections to the modem without the need for special drivers. This type of device configuration that works with SMS and 3G/GPRS opens the door for numerous kinds of connection applications with various PLC and PC. With the voice interface, the GTM-203M-3GWA 3G cellular controller can be used in the alarm system with sounds.

  • Industrial design, making it a reliable cellular solution for data collection adn transmission
  • Reliable GSM/GPRS/EDGE/WCDMA/HSPA network connectivity, providing fast and cost-effective long-range wireless
  • Designed for Data, SMS, and Voice Applications
  • Support TCP Server, TCP Client, UDP Client Connection stack
  • Support Standard AT Commands
  • A Digital Input Channel for Resetting the System
  • LED Indicators for 2G/3G and Power Indication
  • USB 2.0 high speed
  • USB Driver for Windows, LinPAC (Linux 2.6)
  • DIN rail mountable


  • Remote data monitoring and control
  • Water, gas and oil flow metering and schedule
  • Power station monitoring and control
  • Oil field, weather forecast, environmental protection, street lights monitoring and control
  • Fleet management
  • Vending machine monitoring and maintenance
  • Vehicle logistics and diagnostic controlling
GSM/GPRS Interface
Frequency Band GSM 850/900/1800/1900 MHz
GPRS Connectivity GPRS class 12; GPRS station class B
CSD GSM max. 9.6 kb/s
UMTS max. 64 kb/s
Coding Schemes CS 1, CS 2, CS 3, CS 4
3G Interface
Frequency Band WCDMA 850/900/1900/2100 MHz
PSD HSUPA max. 5.76 MB/s
HSDPA max. 7.2 MB/s
WCDMA max. 384 kb/s Download/Upload link
SMS MT, MO, CB, Text, and PDU mode
Comm. Interface
COM Port RxD, TxD, GND
COM Port Baud Rate 9600 bps ~ 115200 bps (default:115200 bps)
USB USB 2.0 (high speed)
USB Driver Support Windows XP/Vista/7/8/Server 2012, Linux
LED Indicators
Power Red
3G/GSM Green
Protection Power reverse polarity protection
Frame Ground Protection ESD, Surge, EFT, Hi-Pot
Required Supply Voltage +10 VDC  ~ +30 VDC
Rated Current 30 ~ 15 mA / 10 ~ 30 VDC
Reset Input
Input Type Isolated, 3750 Vrms
On Voltage Level +3.5 VDC ~ +30 VDC
Off Voltage Level +1 VDC max.
Input Impedence 3 kΩ, 0.25W
Casing Metal
Dimensions (W x L x H) 28 mm x 78.5 mm x 100 mm
Installation DIN-Rail
Operating Temperature -25°C ~ 70°C (-13°F ~ +158°F)
Storage Temperature -40°C ~ 80°C (-40°F ~ +176°F)
Humidity 5 ~ 90% RH, non-condensing

Copyright © 2022 iComTech. All rights reserved. Shopping Cart Software powered by ecMidas.