A: This light plugs into the wall.
A: You can pull them out by hand, just simply glide out with your fingers.
A: No, it doesn't have an on/off button
A: Yes, this is safe to be placed outdoors from getting wet in the rain.
A: Yes, it is safe to put it outside. It does fine in the rain.
A: Yes, it is made to go outside and the rain has not affected mine yet.