Heiman HM-5HW Interlinked Wireless Heat Sensor Alarm

The Heiman HM-5HW is designed to provide reliable, low-effort protection in locations where rapid heat increases are the primary danger. Using a precise thermal sensor the device detects excessive temperature rise (activation range 54–65°C) rather than smoke, so it is particularly well suited to kitchens, boiler rooms, garages, basements and other environments where conventional smoke detectors can give false alarms or miss fast-developing hot-spot fires. The detector operates across a broad ambient range from −10°C to +50°C, ensuring stable performance in both cold and warm spaces.

One of the HM-5HW’s key strengths is its wireless interlinking capability: a single unit can be paired with up to 40 other compatible Heiman detectors and accessories. When one sensor detects a hazardous temperature rise, all linked devices sound simultaneously, delivering immediate, house-wide alerting — a critical advantage in larger homes, hotels, workshops and warehouses. The alarm emits an 85 dB tone, loud enough to wake occupants and attract attention in noisy environments.

Practicality and durability were also priorities in the design. The housing is moulded from robust ABS plastic that resists moisture, corrosion and salt exposure, enabling use in more demanding or semi-industrial settings. Because the HM-5HW communicates wirelessly there is no need for complex wiring, simplifying installation and future repositioning; the sensor can also be muted or reset using a compatible remote control for convenience during maintenance or nuisance events.

For everyday use the unit requires minimal upkeep — basic periodic testing and adherence to local safety guidance — and it ships complete with mounting screws, plugs and a user manual for quick setup. The Heiman HM-5HW is a practical, network-ready heat alarm ideal for locations where temperature sensing provides the earliest and most reliable warning of danger.