Mercury 10 Year Smoke Alarm with Sealed Lithium Battery & Hush Button | Photoelectric Fire Detector for Home Safety | Easy Install, Low Battery Warning

Photoelectric Smoke Detector with 10 Year Sealed Battery An easy-to-use photoelectric smoke alarm that needs no battery maintenance during its 10-year lifespan. Simply engage the internal battery by releasing the pin on the unit's base, fix to your desired surface and test regularly. Once the detector nears the end of its 10 year life, a low battery indication alerts you to replace the unit. This model also has a hush feature to reduce the unit's sensitivity for a ten-minute period when required. 10 Year internal battery for peace of mind and hassle-free use Hush feature reduces the sensitivity of the alarm for a 10-minute period when required Audible and visual alarm Large test/hush button for ease of use Low battery indication Conforms to EN14604:2005 AC/2008 BatteryCR123A DC3V Internal (not removable) Alarm output85dB @ 3m Static working current