This read-only value gives the lowest temperature threshold considered normal for this monitoring point while the card is in working mode, expressed in CoriantTypesTemperature units. It lets monitoring software flag an out-of-range low reading, which on optical transport gear can indicate a cooling overshoot or an environmental problem in the site rather than the card itself overheating. For example, if this threshold is set to 0C for a chip sensor and the live temperatureDetailsTemperature drops below it, the system can raise a low-temperature alarm distinct from the high-temperature case.