With the Wireless LED Motion Sensor Door Light you can easily add some extra security to your home or office. This wireless LED Step Light has a motions sensor, perfect for stairways and hallways. When motion is detected, the motion sensor light comes on brightly. This motion light is weatherproof, so it can be used indoors or out, in the RV, entryway steps or boat dock. Power by 4-pcs AAA battery. No wires needed.