We use these motion sensors for EVERYTHING at the house, and with kids you never know when you'll need them right??? They are great for outdoor night time trampoline jumping and grilling to just having beside my sons bed to scare monsters away. We can mount them with screws and tape or just move them from place to place. They take batteries and don't stay on very long at all once the motion sensor gets activated. They aren't extremely big so they don't take up a ton of room and they shine a very pretty light too. I never thought of all the things I could use these small motion sensors for until I got them and now I'm using them all the time, my children love them and will be using them again tonight jumping on the trampoline. They'll having the best time EVER!!!!