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

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Was: $126.00
Now: $74.45
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Product Overview

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.


  • 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

[Click for user manual]

Warranty One and five year warranty
Brand Gentex
Product Type Emergency Devices


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