Mains Powered Optical Smoke Alarm - Sealed Lithium Mains Powered Heat Alarm - Sealed Lithium However, power to all alarm circuits should be cut before removing and replacing any mains powered alarm. The simple installation process of the Ei146e replacement alarm eliminates the need for an electrician. Suitable for installations complying to BS 5839-6 Grade D2.Fits onto your existing Ei141 alarm base (easi-fit base included to keep as a spare).High performance optical sensor most suitable for detecting slow, smouldering fires.Suitable for living rooms, dining rooms, bedrooms, hallways and landings.Back-up Battery: Replaceable 9 Volt alkaline battery.Power: 230V mains powered with back-up battery.The more modern optical sensor technology in the Ei146e is less susceptible to false alarms, making it suitable for use in a wider range of locations such as rooms adjacent to kitchens, hallways, landings, bedrooms, and living areas. The new alarm can interlink with any other Ei140/140RC series alarms remaining in your system, along with many other Ei Electronics / Aico models. ![]() This means you don't need to spend a penny on an electrician or worry about the disruption of rewiring works. If you need to replace an Ei141, the Ei146e which uses optical smoke detection is 100% compatible with your existing base plate and alarm system. As all Ei141 alarms use older ionisation smoke detection technology, they are now being discontinued. The Ei141 is a mains powered smoke alarm with alkaline back-up battery.
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