控制按钮开关是机器控制最好的选择。

The switch is the best choice for machinery power.

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按钮开关易控制。

Easy push button switch.

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按钮开关：手操作轻巧灵便，分有绳操纵和无线遥控两种方式。

Button switch: operation right spirit, a string manipulation and wireless remote control two ways.

youdao

按钮开关：手操作轻巧灵便，分有绳操纵和无线遥控两种方式。

Button switch: operation right spirit, a string manipulation and wireless remote control two ways.

youdao