Gentex Corporation GN-503FF IN STOCK The Edwards SD-T18 18-inch Sampling

The Edwards SD-T18 18-inch Sampling Tube is engineered for use in duct smoke detection systems requiring accurate air sampling in medium-width ducts

The Siemens HTRI-R single-input interface module with relay allows fire alarm systems to monitor and control external devices with precision

The EST3 Control Display modules provide the emergency user with the simplest of interfaces

11 field selectable candela settings

causes the detector to automatically signal an alarm condition but dust and debris accumulated over time does not change alarm sensitivity

Gentex Corporation GN-503FF IN STOCK The Edwards SD-T18 18-inch SamplingThe GN 503 (120VAC 9VDC) Series of combination photoelectric smoke and electrochemical sensor carbon monoxide alarms are for use as evacuation devices in all dwelling units, including but not limited to homes, apartments, hospitals, hotels, motels and other commercial occupancies. The GN 503 Series is listed in compliance with ANSI UL 217, ANSI UL 2034, for installation per NFPA 720 and NFPA 72. Available in three models, the GN 503 Series is