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First Alert First Alert AC/DC CO Alarm

First Alert AC/DC CO Alarm

Regular price $46.64 Sale

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: In stock

This single or multi-station CO alarm installs in minutes! It has the same contractor- preferred design as our popular Model 4120B smoke alarm, and can be interconnected with up to 11 additional smoke or CO alarms.A hardwired carbon monoxide alarm that meets building codes where AC/DC carbon monoxide alarms are required. The CO5120BN features a permanently installed sensor. Meets UL2034.


  • 120- volt AC with 9 volt battery back up
  • Alarm latch indicator automatically identifies initiating alarm(s) even after alarm condition is over.
  • 'Intelligent Sensing Technology' microprocessor controlled circuitry
  • Interconnectable to all BRK Smoke, CO and Heat Alarms on one interconnect wire
  • 5 year limited warranty

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