Each temperature sensor is associated with two sets of limits or thresholds. The regular alarm is ideally suited for controlling temperature using a cooling fan or load reduction (e.g., reducing processing, clock frequency, or shutting down parts of the device). The direct measurement of temperature can reveal the progress made by the cooling strategy and can potentially refine that strategy as a result of what is observed. The OT alarm is normally set at or close to the maximum recommended operating temperature of the device in the data sheet. The generation of an OT alarm usually implies that attempts to control temperature have failed. In this case, the system typically triggers an immediate but controlled shut down of the equipment to prevent erroneous operation or permanent damage.