The Aico Ei3014 Mains Powered Heat Alarm is a reliable and effective home security device that operates on a hardwired power source with a battery backup for peace of mind. With a 10-year manufacturer warranty, this white-coloured heat alarm features a 90 dB operating sound rating and can be connected to a smart home system via Wi-Fi or X10 protocols. The compact unit has a diameter of 15 cm and is equipped with a single battery included, making it easy to install and use in any home setting.
eBay