Gentex Corporation GN-503FF IN STOCK The Siemens HTRI-R single-input interface

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

Intelligent sounder base capable of producing sound output with ANSI Temporal 3 or continuous tone

Pet owners are protected from false alarms through Vertical Beam Shaping (VBS)

The LED blinks with each poll received

The SD-T36 is equipped with multiple precision-drilled holes that pull air evenly from across the duct

Gentex Corporation GN-503FF IN STOCK The Siemens HTRI-R single-input interfaceThe 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