Manufacturer Name: System Sensor Product Number: D4120W OEM Part Number: D4120W Product Description: Nema Iv 24Vac/Dc120v Photelec Weight:3.09lbs/1401.6g

The System Sensor D4120W Nema IV Photoelectric Smoke Detector is a heavy-duty smoke detector designed for harsh environments found in commercial and industrial buildings. It uses a photoelectric chamber.

For an efficient and reliable HVAC system, the System Sensor Duct Smoke Detector Photoelectric Sensing Outdoor » is a great choice for optimal system performance.

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