Heiman HM-5HW-T Wireless Heat Alarm – interconnected heat detector with 10-year battery

The Heiman HM-5HW-T is a wirelessly networkable heat detector for the early detection of excessive temperatures. Unlike classic smoke detectors, this device reacts specifically to heat – ideal for kitchens, boiler rooms, garages, or workshops where smoke detectors often trigger false alarms.

As soon as the ambient temperature is between 54°C and 65°C, the detector emits a loud and visible alarm. Simultaneously, the signal is forwarded to up to 40 other networked devices. The HM-5HW-T can also be monitored, tested, and muted via app using a compatible smart gateway.

Typical applications
– Kitchens, boiler rooms, garages, or workshops with heat-intensive equipment
– Residential buildings with wirelessly networked alarm detectors
– Smart home systems with gateway and app control

Technical data
– Model: HM-5HW-T
– Sensor type: Heat detector (heat sensor)
– Alarm trigger at: 54°C to 65°C
– Power supply: DC 3V (1 × CR123A or CR17335 lithium battery)
– Battery life: Up to 10 years
– Alarm volume: ≥85dB (at 3m distance)
– Alarm type: Acoustic + optical (LED)
– Communication protocol: Radio 868MHz
– Radio range (open field): Up to 200m
– Max. number of networkable devices: 40 units
– Current consumption: ≤10µA (standby), approx. 200mA (alarm)
– Operating temperature: -10°C to +65°C
– Humidity: ≤95% RH (non-condensing)
– Dimensions: Ø 99.5 mm × 35 mm
– Mounting: Wall or ceiling mounting

Special features
– Group alarm: A triggered detector activates all networked devices
– Self-test function on the device or via app
– Hush function for muting via device, remote control or app
– App warning for temperature rise or low battery level
– Compatible with smart gateways for remote monitoring
– Awarded the Red Dot Design Award