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A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control to automotive coolant control.
The precise temperature of the melting point phase transition acts as a natural thermostat, fixing to 0 °C. Reference junction sensor (known as " cold junction compensation "): The reference junction block is allowed to vary in temperature, but the temperature is measured at this block using a separate temperature sensor.
One issue with using a smart thermostat is the unreliability of the motion sensor. One of the main features of the smart thermostat is the ability to change the temperature when the sensor in the thermostat does not sense an occupant. The only sensor that is used though is the sensor in the thermostat.
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The Honeywell T87 Round Thermostat is a thermostat that Honeywell International, Inc. first manufactured in 1953. [1]
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A Single-Pole, Single-Throw (SPST) mercury switch on millimetre graph paper, device length approximately 1.5 cm Another mercury switch design. A mercury switch is an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit.
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