Gentex Hardwired Interconnected Photoelectric Smoke and CO Alarm with Dualink, Battery Backup and Relay Contacts
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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.


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