This combination Gentex 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
  
• One set of Form A/C relay contacts
  
• 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-503 combination smoke/CO alarms
  
• 9V battery backup
  
• UL Listed (USA); CSFM listed