Sensirion SGD4x A2L Refrigerant Sensors are Refrigerant Detection Systems (RDS) designed for HVACR applications. The Sensirion SGD4x sensors operate on the thermal conductivity principle and include a dual dry-contact relay output to trigger a blower, shut off the load, or alert a control board. An LED status indicator provides quick visual feedback for easy installation. With fast response times and multi-refrigerant calibration, the devices support A2L refrigerants, making them ideal for residential and commercial systems. The Sensirion SGD4x A2L Refrigerant Sensors meet industry standards like UL60355-2-40 and offer dual calibration for R454B and R32 in HVAC, plus triple calibration for R454A, R454C, and R455A in refrigeration systems.
