Industrial GSM communication device


  • Quad-band GSM/GPRS (850/900/1800/1900 MHz) terminal
  • Based on Simcom SIM900 module
  • RS232 DCE serial interface
  • LED power supply indication
  • LED GSM network indication
  • Switch ON/OFF using DTR signal
  • Voice port
  • SMA 50Ω antenna connector
  • Wide power supply range 8 to 30V DC
  • Desktop aluminum case
  • DIN 35mm rail mounting capability


DECODE GT900 is compact quad-band GSM/GPRS terminal which enables easy connection of user devices and PCs on GSM network. It is based on Simcom SIM900 module with integrated TCP/IP stack. Communication connector is standard DB-9 female plug with RS232 DCE interface. Antenna is connected on female SMA 50 connector. LED diodes on front panel indicates presence of power supply and GSM network. Device has wide power supply range, from 8 to 30V DC. GSM antena, RS232 cable, power supply foresaw for connecting to 220V AC socket i CD with user manual are included in package. Device is deleivered in desktop case, whilst by adding an optional adapter it can be mounted on DIN 35mm rail.


DECODE GT900 terminal manages communication connection of electronic devices and systems over GSM network by using GPRS, CSD and SMS services. It is especially designed for remote convey and control of industrial processes, security systems, POS terminals, level indicators (gas, water, electricity...).

Typical applications:

  • remote PLCs reading and control
  • remote process convey
  • paying on POS (point-of-sale) terminals
  • vending machine convey
  • traffic control
  • device service and maintenance
  • alarm systems


GSMSimcom SIM900 Quad-Band 850/900/1800/1900 MHz;
Compliant with 3GPP GSM Phase 2/2+ standard
Multiplexed RS232 interface; AT command interface; Power saving mode
GPRSClass 10 (sending upto 42.8Kbps, reception upto 95.6Kbps)
Coding scheme: CS-1, CS-2, CS-3 i CS-4; PAP protocol, TCP/IP protocol, PPP connection
CSD2400, 4800, 9600, 14400 bps
SMSSending: MO (mobile originated), supported PDU and text mode
Reception: MT (mobile terminated), supported PDU and text mode
CBM (cell broadcasting message)
SMS status report according to 3GPP TS 23.40
FAXGroup 3, class 1
Additional capabilityPhonebook, Call diverting, Multiparty, Real time clock, timer
Output powerClass 4 (2W at 900MHz)
Class 1 (1W at 1800/1900MHz)
SIM cardMini SIM, 1.8V/3.0V
Serial interface RS232ITU-T V.24 / V.28, DCE configuration, DB9 female
Serial baud rate1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
1 start bit; 7 or 8 data bits
Odd, Even and Non parity
1 or 2 stop bits
Antenna connectorSMA female, GSM 50Ω antenna connector
Voice portOptional, 3.5mm Headset Jack
LED indicationgreen – Power ON, red – GSM ON
Power supplyDC power supply, from 8 to 30V
Power supply connectorPluggable screw clamp, 2.5mm2
Power supply included12V DC, 500mA max
Power consumptionStandby 0.2W, max 2.5W
Dimension86 x 57 x 26 mm (without connection blocks)
Weightcca 100g
Temperature range-20°C to +75°C, 0 to 95% RH (non condensed)
MountingDesktop case, DIN 35mm rail mounting capability (optional adapter)


GT90010310Industrial GSM communication device€99


Add To Cart
SKU# 10310

*Minimum functionality kit needs to include the device, appropriate power supply and antenna. Please note that all accessories are sold separately.

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Product Documents