The LED Dusk to Dawn Night Light is a set of 2 lights that provide easy, wireless installation. Perfect for stairways, hallways, bathrooms, and closets, these lights offer increased safety with their motion sensor technology. Each set of batteries (not included) lasts approximately 6 months with 8 hours of average use per night. The lights can be mounted with the included hardware or double-sided adhesive in less than 5 minutes. Say goodbye to stumbling in the dark with these convenient and energy-efficient night lights.