Fire Alarms for Home Smart Smoke Alarm Battery Smoke Detector with LED Indicator,10 Years Lifetime,Test & Silence Button

【Quick and smart response】 Determine whether there is smoke by the change in the intensity of the infrared light scattered in the smoke. When the light intensity received by the photosensitive receiver exceeds the set value, the light signal will be converted into an electrical signal, and the piezoelectric horn will be driven to sound an alarm.
【Powerful self-detection function】 The smoke alarm has a fault detection function. When the smoke sensor has a short circuit, open circuit or other bad conditions, the detector will automatically detect and send a fault signal. Protect family and property safety in time.
【Long product life】 Compared with other battery and machine integration products, the product has a 10-year lifespan and a 5-year replaceable battery design, which is more user-friendly.(Note that this product does not contain batteries.)
【Easy installation】 No need to connect wires, just use the attached screws to fix the anchor plug on the mounting bracket, and rotate the smoke sensor to the right to the gap to complete the installation on the ceiling or wall.
【High standard, safe and reliable certification】 The smoke detector has passed CE certification and British BRE certification, providing you with better safety and reliability