Cooper Lighting & Safety FXN525 high heat sensor of conventional detectors have been specifically designed to operate with JSB control panels. The rate of rise heat detector is used to detect rapid increases in temperature with a maximum threshold of 60°C. These detectors are designed to be used in environments where the ambient conditions might cause false alarms if smoke detection were to be used, for example where there is a high level of dust, fumes, steam or smoke under normal conditions.