The Aico Ei3016 Optical Smoke Alarm in white is a battery-powered, hardwired unit with a 10-year manufacturer warranty. It has a diameter of 15 cm, depth of 6.2 cm, and weighs 332 g. With a smart home protocol of Wi-Fi, this smoke alarm emits an operating sound rating of 90 dB. The 4-pack includes batteries with expiry date MAY 2036, ensuring comprehensive coverage for your home.
eBay