The Ei144e is a mains-powered heat alarm with a 9V battery backup, making it perfect for areas where smoke alarms are not suitable, such as kitchens, garages, and utility rooms. It features a fast-acting thermistor for quick Class A1 heat detection and can be hardwired for interconnectivity. The alarm comes with a convenient Easi-fit base and a large, user-friendly Test/Hush button. It's also compatible with remote testing, locating, and silencing, and includes a memory feature. A 5-year guarantee provides added peace of mind.