X-Sense Smoke Alarm for Home with 10-Year Sealed Battery, SD11, 1 Pack

Sensitive & Intelligent: The state-of-the-art photoelectric sensor, combined with an advanced intelligent chipset, this smoke alarm for home can accurately detects dangerous smoke levels in seconds with fewer false alarms
10-Year Battery Life: The low power consumption, combined with a built-in non-replaceable lithium battery, enables an incredible product life of up to 10 years provides reliable uninterrupted 24/7 protection so you can sleep safely
Reliable Auto-Check: The fire