Bentel Temperature Rate of Rise Fire Detector 601H-R detects abnormally high rates of rise of temperature and abnormally high (static) temperatures respectively. For general use and particular where the ambient temperature may be low, a rate of rise heat detector 601H-R is to be preferred. A fixed temperature limit is also incorporated in these detectors. In many environments, e.g. kitchens, canteens and boiler rooms, sudden large changes in temperature are considered normal therefore rate-of-rise detectors are generally not suitable in these cases and a slower response fixed temperature detector should be used.

The detector is supplied complete with a mounting relay base (not shown in photo).