The 302-ET-194 Thermotech rate-anticipation warmth detector from Honeywell NOTIFIER operates in just a controlled range of two to 3 degrees in their set details, regardless of the velocity or amount of temperature increase. When wiring an addressable fire alarm procedure, very careful installation and reference to a detailed wiring diagram https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/