Use mechanical heat detection where smoke sensing is unsuitable with a 135 F fixed threshold, restorable 15 F-per-minute rate-of-rise element, and 50 x 50 ft listed spacing.
Protect higher-temperature spaces with a 194 F fixed threshold, restorable 15 F-per-minute rate-of-rise response, and single-circuit mechanical design.
Protect heat-prone areas with a wireless detector selectable for 135 F or 200 F, 12-to-15 F-per-minute rate-of-rise detection, and 50-by-50-foot UL spacing.