Control circuit through the loading or unloading coolant compressor and make the air-freeze agent in the heat exchanger compressed air temperature constant.
控制电路通过加载或卸载冷冻剂压缩机而使空气-冷冻剂热交换器中的压缩空气温度保持恒定。
The temperature control relay switch device arranged in a circuit ensures that the warming mattress realizes the aim of automatic constant temperature control.
电路中设置的温控继电器开关装置，使取暖床垫达到了自动恒温控制目的。
Safety protection power circuit: Constant current control circuit, high standard standard protection system: preventing high voltage, temperature, surge, lightning and so on.
安全防护电源电路：恒流驱动电路，高标准防护系统：对过压、过热、浪涌、防雷具有良好的保护作用。
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