The Senseair Refrigerant Detection System R32 & R454 A/B/C is an enclosed leak detection sensor module for HVAC applications using the low GWP A2L class refrigerant R32 and R454A, R454B and R454C. It is engineered for precise, reliable detection in very demanding environments and ease of installation.

Defining attributes

• Fast response time
• High accuracy
• Wide temperature range
• Maintenance-free
• Compliant with IEC & UL 60335-2-40
• Factory calibrated
• Long term stability
• Long lifetime
• Immunity to poisoning
• LED-based light source

Engineered with a standardized connector pinout and robust IP66 and IP67 enclosure, the RDS R32 & R454 A/B/C offers flexible power supply options and multiple output configurations—simplifying installation and integration into diverse systems.

A protective housing with a high-quality gas diffusion vent safeguards the sensor element from dust and condensation. Thanks to the built-in heating element, the RDS R32 & R454 A/B/C can operate in cold environments. Using Modbus protocol, the measured data is digitally transmitted to the control system. A digital output signal is activated when the gas concentration reaches a configurable threshold, and the output can be set as a digital PWM signal or an analogue linear output reflecting the measured concentration.