Gentex Corp.

GN 503FF

Gentex Corporation has released a combination photoelectric smoke and carbon monoxide (CO) alarm with two sets of Form A/Form C relay contacts activating independently for smoke and CO events.  The GN-503FF utilizes photoelectric and electrochemical sensing technology performance wherever smoke and CO detection is required.  The GN-503FF is a 120VAC, hard wired alarm with 9VDC battery back-up and includes tandem interconnect capabilities, differentiating signals for each alarm type annunciation, quick disconnect wire harness, low or missing battery indicator and push button self and functionality test.

http://www.gentex.com/fire/products