The 302-AW-194 Thermotech price-anticipation heat detector from Honeywell NOTIFIER operates in a controlled array of two to three levels in their established points, regardless of the velocity or amount of temperature rise. This is a Commonly-open up machine built specifically for fireplace detection and alarm systems. If you're thinking that https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/