Heat Alarm Powered by Mains with a Replaceable 9V Battery ESP Espire ES1HRV Mains Powered 9V Replaceable Backup Battery Auto Sensor Test - Alarm Self-Checks Sensor Auto Dimming Power LED - Day Mode and Night Mode Memory Function - Alarm Stores An Activation For 24 hours Interconnect Alarms Through Hardwire Or Optional RF-Link Module Hush Function - Silences An Alarm Activation For 10 Minutes Lock-In Base Grade D2 Installations The Espire ES1HRV is a mains-powered heat alarm with a user-replaceable 9V backup battery for practical, cost-effective protection. Ideal for kitchens and steam-prone spaces, it features automatic sensor testing to verify operational integrity at regular intervals. The intelligent LED automatically dims between day and night modes, eliminating visual disturbance whilst maintaining visibility. A 24-hour memory function records alarm activations, allowing you to identify when detection occurred even after the event has passed. Interconnect multiple units via hardwire or optional RF-Link module for coordinated coverage throughout your property. The hush function silences activation for 10 minutes when needed, and the secure lock-in base ensures stable mounting. Compliant with Grade D2 standards, this alarm combines mains reliability with straightforward battery maintenance. Engineered to Espire's exacting standards, it delivers dependable fire detection with hassle-free installation and upkeep. . Brand ESP Recommended Installation Locations Kitchen Areas, Garages & Loft Areas Battery Type 9V Alkaline Colour White Decibel Rating 85 dB[A] @ 3 m Depth 59.5mm Diameter 132mm Guarantee 5 Years Material UL94-V0 Rated UV Stabilised ABS Temperature range 0°C to 40°C Mounting Ceiling Weight 0.240 Shape Round Test Facility Yes Sensor Type Heat