Where to place the sign please turn off the lights?

Please put the slogan "Please turn off the lights" at the power switch in public places and in places where electricity needs to be saved.

1. A slogan asking to turn off the lights should be posted at the power switch in public places to avoid the waste caused by crowded people forgetting to turn off the power.

2. Post a slogan asking to turn off the lights in places where electricity needs to be saved. The reason is that the electricity in the area cannot withstand the excessive use of light bulbs. People should be reminded to turn off the lights at any time and not to waste electricity.