Carbon Monoxide Alarm, Hardwired W/battery Backup

Protect your home from colorless, odorless and toxic gas with this First Alert AC hardwired carbon monoxide detector. An electrochemical sensor warns you and your family of the first sign of carbon monoxide, eliminating the risk of accidental poisoning. Two silence features mute low battery chirp for up to 8 hours or temporarily silence unwanted false alarms. Intelligent sensing technology™ reduces the number of nuisance alarms, so you won’t be bothered by beeping. A latching alarm indicator helps emergency responders identify which units were exposed to dangerous levels of carbon monoxide. Battery backup provides added safety during power outages for consistent protection against the threat of toxic gas. What's Included: Alarm, 9V battery, mounting bracket & hardware, manualAC hardwired carbon monoxide detector creates a strong defense against colorless, odorless and toxic gasQuick connect plug with 8" pigtailsElectrochemical CO sensor alerts you to carbon monoxide dangerMicroprocessor-controlled for fewer false alarmsBattery backup helps keep alarm functioning during power outagesLoud 85-decibel siren can be heard easily2 silence features low battery for up to 8 hours and nuisance alarms for up to 6 minutesTin oxide sensor permanently stores highest c/o readingAutomatically performs internal testInterconnect up to 18 units