System Sensor D4S Detector Sensor Els PW 17895 Verify your motor shaft size

Verify your motor shaft size and hub rotation before installation to ensure seamless compatibility with existing condenser motor configurations

and chilled water loops

across various HVAC equipment like AHUs and fan coil units

This sensor is manufactured with high-temperature resistant materials to withstand the intense thermal environment of the burner assembly

Relying on genuine Reznor 196949 components ensures seamless compatibility and maintains the factory-specified safety parameters of the equipment

System Sensor D4S Detector Sensor Els PW 17895 Verify your motor shaft sizeThe 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