The First Alert SCO5CN carbon monoxide and smoke alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. The alarm uses photoelectric smoke sensing technology which is environmentally friendlier and which reduces nuisance alarms, making it ideal for cooking areas. It is also great for sensing slow smoldering fires quickly. The permanent sensors last the lifetime of the alarm. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. A low battery signal alerts you to replace the battery and end-of-life alarm of three chirps alerts you to replace the unit. Two AA batteries are included. 5-year limited warranty.
Battery-powered smoke and carbon monoxide detector helps you avoid house fires and accidental poisoning
Electrochemical sensor alerts you at the first sign of carbon monoxide, the colorless, odorless gas that would otherwise go unnoticed in your home
Photoelectric sensor detects slow, smoky and smoldering fires, so you won’t worry about accidental fires spreading
Front-access battery compartment makes replacements effortless (AA battery included)
Test/silence button ensures your detector is working and mutes low battery chirp for up to 8 hours or temporarily silences a nuisance alarm
ETL safety listing demonstrates this product has met minimum requirements of widely accepted product safety standards
5-year limited warranty
Tested to UL standards
Smoke and CO alarms should be placed on every level and in every bedroom of the home