LE&reg; PIR Under Cabinet Lighting, Wireless Motion Sensor Light, Battery Powered, 10 Super-Bright LEDs, Stick-on Anywhere with Magnetic Strip, Daylight White, Closet Cabinet LED Night Light, Pack of 3 Units Safe to use. Battery powered, it is touchable and safe to children. Easy to install. Stick it to anywhere with the self-adhesive foam tape (included). No wiring required. The battery is easy to change. An adhesive strip with magnetic fields is easily attached to and detached from the lamp body, so you needn't tear off the self-adhesive foam tape when changing the batteries. Pack of 3 units No electricity cost. Operate for months on 4 AAA batteries (not included). Please note: 1. The stick position must be smooth and dry. 2. If the light is dim or the sensor is not sensitive enough, it means the batteries need to be replaced. Please make sure to put batteries into the battery holder according to the battery polarity labels 3. It will automatically turn on only when it is dark and a motion is detected. There should not be any barrier between the light and the people 4. The sensing distance is about 1 or 2 meters.