Gentex GN-503FF Hard Wired Smoke / Carbon Monoxide Photoelectric Alarm with Backup

This combination smoke and carbon monoxide alarm is hard wired with battery backup for reliable notification in homes, apartments, hospitals, hotels, motels and other commercial properties. This is a photoelectric single station smoke alarm with electrochemical sensor carbon monoxide alarm. One year warranty. Five year limited warranty on CO sensor.Features: 85dBA alarm horn at 10 feet 120VAC with 9V battery backup DUALINK® differentiating tones: T3 temporal smoke alarm, T4 temporal carbon monoxide alarm Two sets of Form A/C relay contacts activate independently for smoke and carbon monoxide events Relay contacts operate on battery backup Push button self test feature Push button functional test feature Non-latching (self restoring) alarm Low battery or missing battery indicator Meets state, federal, and ADA requirements Quick-disconnect wiring harness Connect up to a maximum of 12 Gentex GN-503FF combination smoke/CO alarms 9V battery backup UL Listed (USA); CSFM listed