4098-9733 Simplex / 135 ° F Rating (57 ° C), Heat Temperature Detector

Temperature detection is selectable at the control panel for either 15° F (8.3° C) or 20° F (11.1° C) per minute. Fixed temperature sensing is independent of rate-of-rise sensing and programmable to operate at 135° F (57.2° C) or 155° F (68° C)