Gentex Hardwired Interconnected Photoelectric Smoke and CO Alarm with Dualink Battery Backup and Relay Contacts GN-503F

The Gentex GN-503F is a combination photoelectric smoke and electrochemical carbon monoxide (CO) alarm for use as an evacuation device in all dwelling units， including but not limited to homes， apartments， hospitals， and hotels/motels. The GN-503F is engineered to eliminate nuisance alarms and deliver outstanding performance wherever reliable smoke and CO protection is required. The GN-503 is ANSI/UL 217 and ANSI/UL 2034 listed and in compliance with NFPA 72 and NFPA 720.

120VAC with 9VDC battery back-up

Temporal 3 evacuation piezo horn with a 3100Hz (nominal) horn frequency for smoke annunciation

Temporal 4 evacuation piezo horn with a 3100 Hz (nominal) horn frequency for CO annunciation

Form A/form C relay contacts

Relay contacts operate when on battery back-up

Push button self test feature

DualinkFeature: tandem with all Gentex tandem capable alarms

Quick disconnect wiring harness

Dust cover to prevent particle contamination during installation

Low or missing battery indicator

End of life signal indicates CO sensor has reached depletion state and time to replace

1 year warranty from date of purchase