Refrigerant Detection Sensor Breadcrumb Home / Products / Parts / Refrigeration Components / A2L Dissipation Loading... Mfg Part #: ICM-A2L-SENSOR Brand: ICM Certified To: UL 60335-2-40 Operating Temp (F): -40°F to 158°F (not powered) Operating Humidity: 0 To 100% RH (Condensing) Response Time: T28 of 2.5s, T60 of 5s (average)