They work as advertised however just like everyone else is saying. There is a light sensor inside the unit so it will only turn on in pitch black dark so if there’s any light in a room this unit will not turn on. however it’s not bright enough to do anything when it’s pitch black. I did like everyone else and took the two or three screws out of the back of the unit. You then find the sensor as seen in the photo with the little screwdriver pointing to it. Cover that sensor with black electrical tape, and put it all back together. This way it’ll work in any lighted condition. We want to use this in a closet and a pantry. They would not work with the ambient light of the room when you opened up the door. This simple fix, fixed the problem.If using multiple ones together in the same closet one of them would activate throwing enough light to make it so the other two do not turn on because it thinks it’s bright enough. When you put the black electrical tape over the sensor all three of them will light up upon motion and shut off when there is no motion.The light is bright but not super bright. We’re using it in our camper pantry so as soon as the doors open all three of them light up the three sections of the pantry.As far as adhesion. There is some two-sided tape on the back of a metal plate that barely holds the unit up. Then there is a magnet inside the unit itself that sticks to the metal plate. Again barely holding anything up. It’s a weak magnet . In the RV any bumps that you go over will cause these things to fall to the ground. A simple solution is taking it apart again and physically mounting the case using a wood screw to the area where you want it to stay. Then the lighted unit screws back on and it is a permanent fix. For nine dollars I’m sure it is very overpriced for how much they cost to make however they will work well for the purpose that we purchased them for.

They work as advertised however just like everyone else is saying. There is a light sensor inside the unit so it will only turn on in pitch black dark so if there’s any light in a room this unit will not turn on. however it’s not bright enough to do anything when it’s pitch black. I did like everyone else and took the two or three screws out of the back of the unit. You then find the sensor as seen in the photo with the little screwdriver pointing to it. Cover that sensor with black electrical tape, and put it all back together. This way it’ll work in any lighted condition. We want to use this in a closet and a pantry. They would not work with the ambient light of the room when you opened up the door. This simple fix, fixed the problem. If using multiple ones together in the same closet one of them would activate throwing enough light to make it so the other two do not turn on because it thinks it’s bright enough. When you put the black electrical tape over the sensor all three of them will light up upon motion and shut off when there is no motion. The light is bright but not super bright. We’re using it in our camper pantry so as soon as the doors open all three of them light up the three sections of the pantry. As far as adhesion. There is some two-sided tape on the back of a metal plate that barely holds the unit up. Then there is a magnet inside the unit itself that sticks to the metal plate. Again barely holding anything up. It’s a weak magnet . In the RV any bumps that you go over will cause these things to fall to the ground. A simple solution is taking it apart again and physically mounting the case using a wood screw to the area where you want it to stay. Then the lighted unit screws back on and it is a permanent fix. For nine dollars I’m sure it is very overpriced for how much they cost to make however they will work well for the purpose that we purchased them for.