First Alert 10-Year Battery-operated Combination Smoke and Carbon Monoxide Detector Item #12157 | Model #384211 500-watt copper heating elements provide

500-watt copper heating elements provide a first hour delivery of 53 gallons

feeder or floater

so the knob/lever is always free to turn

Photoelectric smoke alarms also reduce the likelihood of false alarms like those caused from cooking fires and shower steam from sounding

Fully automatic and easy to install

First Alert 10-Year Battery-operated Combination Smoke and Carbon Monoxide Detector Item #12157 | Model #384211 500-watt copper heating elements provideThe First Alert BRK PRC700 battery operated smoke and carbon monoxide alarm features a photoelectric smoke sensor and an electrochemical carbon monoxide sensor. The photoelectric sensor detects larger smoke particles from smoldering fires from objects like cigarettes burning on furniture or in trash cans. The alarm features a loud, 85 decibel alarm, designed to wake even the soundest of sleepers. One button silences any nuisance alarms, and also tests