Refrigerant Leak Detection Products

Unsure which refrigerant gas sensor or system you need?
Click the link to select the suitable refrigerant gas sensor by refrigerant gas type and application type.

Non-Aspirated Systems


  • Refrigerant gas leak detector for occupied spaces
  • Replaces AT-G-SENSE
  • Easy to install
  • Alarm management
  • Trouble free calibration
  • Low profile, neutral design (three facia plate finishes)
  • Safety and the Environment (helps achieve BREEAM credits Pol 01 and Pol 02 , EN378 and F-Gas)
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  • Mobile app interface for intuitive commissioning and maintenance
  • Plug-and-play pre-calibrated sensor modules
  • Pre-calibrated & temperature compensated sensors for increased reliability
  • On-board audible and visual alarms for refrigerant safety compliance with BS EN378, BREEAM Pol 01 & ASHRAE 15
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AT-G-DETECT (complete systems – discontinued)
Replacement sensors available to special order until January 2022

  • 1-6 sensors connected and powered by a central panel
  • Two levels of concentration alarm
  • Wide range of sensor housings to suit application
  • Detects refrigerants, halocarbons, hydrocarbons, combustible gases and VOC’s
  • 230Vac supply required
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AT-GU (Discontinued)

  • State-of-the-art gas detector which uses a range of sensor head technologies to detect most gases.
  • Determines the gas level present continuously
  • Analogue Outputs: 0-5V, 0-10V, 2-10V or 4-20mA
  • Digital Output: VFC rated 1A at 24Vdc
  • Visual alarm – leak and fault
  • 12/24Vdc supply required
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AT-G-SENSE (Discontinued)

  • Detects all refrigerants and many other gases
  • Helps achieve BREEAM credits, EN378, F-Gas and EH40 Health & Safety guidelines
  • Standalone unit or up to 16 can be linked to a AT-GSC-16 master panel
  • Remote sensor option available
  • 230Vac supply required
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Aspirated Systems

AT-RLM2 – Refrigerant Leak Monitor

  • Detects all HCFC’s, HFC’s, CO2 and Ammonia
  • Monitors up to 16 Zones
  • Simple 6 key user interface with password protection
  • Individual zone naming and alarm thresholds
  • Optional fail-safe alarm operation
  • Self-diagnostics detect system faults & dirty filters
  • Highly selective to minimise nuisance alarms
  • Historic data & alarm logs
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