• This photoelectric smoke alarm offers reliable smoke detection in a sleek, ultra-compact design; extended-life, tamper-proof 3V sealed lithium battery effectively provides up to 10 years of monitoring, requiring no battery changes for the life of the alarm
• Photoelectric sensor detects smoke from smoldering fires while minimizing false alarms
• Easy mounting bracket for effortless installation on a wall or ceiling
• Battery-operated unit provides continuous monitoring even if there's a power failure
• Alarm also features loud 85-decibel alarm, easy mounting bracket, a single test/silence button, and an end-of-life signal so you know when to replace the unit