When in the first position, the switch provides indication that the wireless communication device is enabled.

当在第一位置时，此开关提供无线通信设备被允许的指示。

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There is mechanical interlock for the drawer units, they can be opened only if the switch is at break-off state. The drawers have apparent position indication for close~ test and off.

抽屉单元装有可靠的机械联锁装置，只有在分断开关的状态下才能被打开，同时抽屉具有明显的合闸、试验、分断位置显示。

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When in the second position, the switch provides indication that the wireless communication device is disabled.

当在第二位置时，此开关提供无线通信设备被禁止的指示。

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