Heat Sensor Alarm HEIMAN HM-5HW wireless interlinked battery-powered heat detector

Heiman HM-5HW Interlinked Wireless Heat Detector Alarm is a wireless heat sensor designed to detect rapid temperature rises and provide audible warning. The device activates an 85 dB alarm and a red LED indicator when the measured temperature exceeds the static response threshold. It operates across a wide temperature range and can be linked with multiple units to form a combined alarm network suitable for homes, hotels, offices and industrial premises.

Advantages

The HM-5HW supports wireless interconnection with up to 40 other alarms, ensuring that when one unit detects heat, all linked sensors sound simultaneously. Its heat-based detection makes it suitable for environments where smoke detectors may underperform, such as kitchens, boiler rooms and garages. The housing is made of durable ABS material with resistance to moisture and corrosion, and the unit features simple radio-based installation without complex wiring. The alarm can be silenced via remote control for user convenience.

Key specifications

• Manufacturer: Heiman
• Model: HM-5HW
• Power supply: 3V
• Alarm indication: Red LED indicator
• Sound level: ≥85 dB at 3 m
• Static response temperature: 54°C–65°C
• Class: A1
• Operating temperature: -10°C to +50°C
• Operating humidity: ≤95% RH (non-condensing)
• Included: Heiman heat sensor x1, screws x2, plugs x2, user manual x1

How to use

Mount the HM-5HW on a suitable wall or ceiling using the supplied screws and plugs. Insert the battery or connect the 3V power supply according to the user manual, and link the unit with other Heiman HM-5HW devices if a networked alarm system is required. The sensor monitors ambient temperature and triggers the alarm and LED indicator when the response threshold (54–65°C) is exceeded. Use the remote control to silence the audible alarm temporarily when needed, following safety procedures before resetting the device.

Recommendations

Install the HM-5HW where rapid temperature rises are most likely to occur but avoid placing it too close to direct heat sources. Regularly test the unit and replace batteries as recommended in the manual. For full-area protection in larger buildings, connect multiple HM-5HW units (up to 40) to ensure simultaneous notification across all zones.