GENTEX HD135-223 220VAC 9VDC Heat Alarm With 135Deg Thermal w/ Temporal 3

The HD135 is designed to detect heat that results from an actual fire. HD135 is 120VAC with 9V battery back-up. HD135-223 is 220VAC with 9V battery back-up. 90 decibel, temporal 3 evacuation audible alarm.

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