500 2 3661f77bff6114f636ff9f3274b828d4

Universal GSM gateways compatible with any alarm system.

GSM500 is a device that, connected to a fixed telephone or to the PSTN input terminals of a PABX or autodialer, allows you to make and receive calls over the GSM network. For correct operation, a GSM SIM card is required.

Different versions are available:

Basic (5IG-160): comes with magnet-base antenna amd extension cable (L= 2 m)

GD (5IG-161): comes with magnet-base antenna amd extension cable (L= 2 m), built-in backup batteries and external adapter.

R2R (5CT-070): comes with magnet-base antenna amd extension cable (L= 2 m), built-in backup batteries, external adapter and a relay output which can be activated either locally or remotely via SMS. The gateway controls the external power failure by sending failure/restore notification via SMS. comes with magnet-base antenna amd extension cable (L= 2 m), built-in backup batteries, external adapter and BD-9 connector for data transmission and SMS forwarding in standard RS-232. Allows the voice and data transmission with only one SIM, the remote monitoring independently from proprietary protocols and the remote control, programming and alerts through the COMNet system. For correct operation, a GSM (voice + data) SIM card is required (GPRS data connection).

5IG-161; 5CT-070


  • PSTN-line cost reduction
  • High transmission speed
  • Low consumption
  • Easy installation by connectors and/or terminal blocks
  • Local programming via DTMF
  • Remote programming via SMS
  • Caller ID visualization
  • Battery check (only available on models: GC, R2R, .net)
  • Relay-based notification of external power failure (R2R)
  • Relay-based notification of GSM network loss (R2R)
  • SMS notifications (low-battery, dead battery, replaced battery,external power failure/restore, GSM network restore)
  • Roaming management feature
  • Remote control of GSM signal strenght
  • Automatic converter of the dialed number
  • Programmable telephone line tension
  • Customizable reception and transmission levels
  • Customizable timeout before dialing
  • Automatic country setting
  • Automatic reboot under prolonged GSM signal absence
  • Remote reset
  • Data transmission through standard RS-232, RS-485 and CAN-bus (
  • Incoming text messages transmission towards devices wired in the DB-9 connector (
  • Text messages transmission by devices wired into the DB-9 connector ( )
  • Remote firmware update
  • Programmable with e-stant software
Hardware and Software design and development carried out at the Esse-ti Research Center. 100% made in Italy.


  • GSM/UMTS signal indicator LED
  • Status indicator LED
  • Line status indicator LED / Data transmission indicator LED (
  • Power supply status indicator LED
  • Quad Band GSM module
  • 2 W transmission power
  • 12 Vdc power supply input
  • 230 Vac external adapter input
  • Female DB-9 connector (
  • Relay output (R2R)
  • External antenna (cable length = 2 m)
  • External adapter (230 Vac 50 Hz input; 12 Vdc 500 mA output; CE mark; only available on models: GC, R2R, .net)


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