The thermostat generates signals, usually electrical, to activate relays, valves, switches, and so on when the temperature rises above or falls Below the desired value.

恒温器包括继电器、阀门、电门等，当恒温器高于或低于所需的数值时，恒温器就发出信号，通常为电信号。

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IMPORTANT: Removal and replacement of the thermostat involves the disconnection of electrical connections.

重要：温控器的拆卸和更换涉及到电路连接的断开。

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Nasa engineers were not sure at first whether the heater's reluctance to operate was a simple thermostat failure or a more deep-seated issue in an electrical switchbox.

美国航空航天局的工程师们最初不能确认加热器不愿运转是简单的恒温器故障还是电气开关箱内的更深层次问题。

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