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Industrial-Grade Construction: Encapsulated design handles the vibration and thermal cycling common in light commercial HVAC applications
System Sensor D4S Detector Sensor 30067439-890 What are the signs ofThe 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
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