System Sensor D4S Detector Sensor 30067439-890 Precision Machining: Features high-tolerance 1-1/4

Precision Machining: Features high-tolerance 1-1/4 inch Rotalock and 3/4 inch ODF ports for professional-grade fit and finish

The York S1-022-11572-000 Suction Valve is a critical OE replacement component designed for HVAC refrigeration systems

protecting your electrical terminations from environmental contaminants

Industrial-Grade Construction: Encapsulated design handles the vibration and thermal cycling common in light commercial HVAC applications

Engineered to withstand the thermal cycling associated with high-pressure steam service

System Sensor D4S Detector Sensor 30067439-890 Precision Machining: Features high-tolerance 1-1/4The System Sensor D4S is a 4 wire photoelectric duct smoke detector sensor component designed specifically for integration with the D4120 duct smoke detector housing. Engineered for high performance HVAC smoke detection, this replacement sensor head utilizes an advanced optical sensing chamber to detect combustion particles across a wide range of airflow speeds. It is optimized for low flow duct smoke detection, maintaining reliable operation in