The CAVIUS 10-year Thermal Heat Alarm detects fast, flaming fires in kitchens, garages, workshops and laundries, and keeps you and your family safer. Using state-of-the-art Danish technology, the Thermal Heat Alarm monitors changes in ambient room temperature and sounds if there is a rapid, constant temperature increase. It is also the world’s smallest heat alarm at just 40mm. If rapid and constant increase of temperature occurs or ambient temperature reaches >58°C, the alarm will sound. Please note, the CAVIUS Photoelectric Smoke Alarm should be installed in all bedrooms, lounges and hallways. For other areas where a smoke alarm cannot be installed (such as the kitchen, garage, workshop, or laundry) a Nano Family Thermal Heat Alarm is recommended.