Wisualarm Mains Powered Heat Alarm | Grade D2 | Class A1 54–65°C | 9V Battery Backup | Wired Interconnect Wireless Smart Thermostat Schedule heating via the hOn

Schedule heating via the hOn app to run on your cheapest tariff hours and use Dual Power mode for any top-up needed during the day

parallel up to 6 towers (215kWh total)

Expansion Vessel (required)

Electrical supply: 220-240V

5 bar (with supplied inlet controls) · 1× 3 kW Incoloy immersion @ 230 V included in all sizes

Wisualarm Mains Powered Heat Alarm | Grade D2 | Class A1 54–65°C | 9V Battery Backup | Wired Interconnect Wireless Smart Thermostat Schedule heating via the hOnGrade D2Class A1 Heat Detection54C 65C Fixed Temp The Wisualarm DHI HY HT5MB is a mains powered Class A1 fixed temperature powered heat alarm certified to BS 5446 2: 2003, designed for rooms where a smoke alarm would cause persistent false activations principally kitchens, garages, utility rooms and loft spaces. It draws its primary power from a permanent 230V mains connection and includes a replaceable 9V alkaline battery as standby backup,