what is the heat rise detector ？

About the Rate-of-rise heat detectors (be short for heat rise detector) Rate-of-Rise (ROR) heat detectors（heat rise detector） operate on a rapid rise in element temperature of  8°C (46.4°F) increase per minute, irrespective of the starting temperature. This type of heat detectors can operate at a lower temperature fire condition than would be possible if the threshold […]