The 302-AW-194 Thermotech fee-anticipation heat detector from Honeywell NOTIFIER operates within a managed array of two to 3 degrees in their set points, regardless of the pace or price of temperature rise. It's really a normally-open up machine developed especially for hearth detection and alarm programs. According to the Countrywide https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/