When it is not used, please turn the power switch off and switch off the power supply.

不使用时，请将电源开关关闭，并切断电源。

youdao

We recommend that you switch off the power supply when leaving electronic equipment unattended for a longer period.

如果电子设备长期处于无人照管的状态下，我们建议把电源关闭。

youdao

Don't switch off power supply when wiping the bulb, pay attention to keep the wiping clothe not too wet.

在擦拭灯管（泡）时不可打开点灯开关，注意不可让抹布过湿。

youdao

Engineers from Arqiva, which owns the transmitter, had to switch off the power supply to the transmitter to assess the damage to the structure.

BBC: Bath transmitter is fixed after arson attack