Heiman HM-5HW Interlinked Wireless Heat Sensor Alarm

The Heiman hm-5hw is a wireless interlinked heat detector that warns of sudden temperature rises with a loud 85 dB alarm audible up to about 3 metres. It monitors ambient temperature across a wide range (−10°c to +50°c) and triggers when temperatures rapidly climb into the 54-65°c window, making it especially useful where smoke detectors are less effective. The unit can link with up to 40 other compatible alarms so a single event notifies the whole system.