BRAND: Sentry

Sentry GSM Communicator with Internal Antenna, PSU Voltage: 12VDC/ max 24VDC, I/P Voltage Range:Min 3VDC / Max. 24VDC, Supply Current:80ma when O/P is Latched on, Relay O/P Contacts: Upto 5A/250VAC 50 or 60HZ, 160x60x45mm, 110g, IP55

Sentry GSM Communicator with Internal Antenna


The SENTRY™ LINK-IT 2 is a cost effective but versatile IoT (Internet of Things) solution for various remote automation projects. Multiple users WEB and APP controlled. SMS control is available as well. It provides one digital Input (configurable by polarity of triggering) and one relay Output (active state settable to Low or High plus NO and NC free potential contacts). here is an option to logically “link” the input to the output i.e. the certain state of the input automatically sets a predefined state of the output.


  • Power supply voltage: min. 12VDC / max. 24VDC
  • Input voltage range: min. 3VDC / max. 24VDC
  • Supply Current: max. 80mA when relay output is latched ON
  • Relay output contacts: rated up to 5A / 250VAC / 50 or 60Hz
  • Dimensions: 160x60x45mm
  • Weight: ±110g
  • IP rating: IP55
  • Operating temperature: -10°C to +55°C
  • Operating humidity: <80%
  • Up to 2000 Access Users
  • Up to 100 SMS Alert Destinations
  • Up to 10 SMS Report Destinations


Additional Information

Device Antenna
Type GSM | Internal