iRZ TG21


Recommended replacement: iRZ TG21.A/TG21.B
  • GSM/GPRS terminal
  • GSM 900/1800
  • Built-in PSU, watchdog timer
  • Description
  • Specifications
  • Documentation

The dual band GSM modem TG21 (900/1800 MHz) is designed for data transmission via cellular net-work. The modem supports GPRS (class 10) and TCP/IP protocol stack. A distinctive feature of this modem is a built power supply, that can work from an industrial network ~ 220V 50/60Hz.

TG21 is focused on the use in industrial applications where the RS485 physical interface is used. This interface enables to connect simultaneously several external devices to the modem. All connections to the modem are made with the use of the terminal connector. The modem is assembled in the case meant to mount on DIN-rial.

TG21 supports all main communication functions: data transmission by CSD and GPRS technologies, fax and SMS transmit and receive. The modem management is realized with standard AT commands. The watchdog timer prevents from the device hang-up.

Extended temperature range and compact case provide the use of the modem in various industrial ap-plications. The TG21 modem is focused on the use in automatic data acquisition systems from supply meters and other energy meters, vending machines, payment terminals, as well as other wireless data transmission systems.

Frequency band:
  • 900/1800 MHz
  • 850/900/1800/1900 MHz (optional)
  • GPRS Class 10
  • TCP/IP stack
  • Communication standards:
    • GPRS Class 10 - up to 85.6 kbps
    • МС class В
    • SMS: МТ, МО, СB, text and PDU modes
    • CSD up to 14.4 kbps
    • USSD
    • Fax functionality - group 3: Сlass 1
    Available network protocol:
    • AT command management (Hayes 3GPP TS 27.007, TS 27.005)
    • SIM application toolkit
    • Timer restore function
    Electrical Characteristics:
    • Built-in Power Supply Unit
    • Power supply voltage: ~100…240 V
    • Supply frequency: 50/60 Hz
    • Current consumption: 300 mA max.
    • Output voltage on connector 6P6C: 12..14.5 V
    • Maximum total output current from the connector 6P6C: 100 mA max.
    Connectors and Interfaces:
    • Screw terminal connector (RS485 interface, power input)
    • Screw terminal connector (~220В/50Hz)
    • SMA connector for GSM-antenna connection
    Physical specifications:
    • Plastic case with the mount on DIN rail
    • Dimensions - not exceeding: 90 х 54 х 59 mm
    • Weight - not exceeding 130 grams
    • Temperature range: -20°C …+65°C