The switch is mainly composed of a temperature sensor and a relay. When the temperature of the heat exchanger reaches the rated temperature of the thermostat, the thermostat sends a signal to the relay so that the relay can be turned off to protect the heat exchanger effect.
1. Two kinds of sensors cooperate with each other, work more accurately;
2. Automatic control, better protection of heat exchanger;
3. Low cost, can be used repeatedly, easy to replace
4. Can be controlled manually over long distances.
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