The 302-ET-194 Thermotech level-anticipation warmth detector from Honeywell NOTIFIER operates in just a managed variety of two to a few degrees of their established details, whatever the pace or fee of temperature increase. The 302-AW-a hundred thirty five Thermotech charge-anticipation warmth detector from Honeywell NOTIFIER operates inside a managed range https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/