The solar light works by using solar panels to generate energy from sunlight, converting it into electrical current to charge an internal rechargeable battery. These cells then power the lights. A built-in light sensor controls the lights, which automatically activate once the sensor detects the onset of dusk. Place solar LED house signs at least 2 meters away from other light sources. The closer the light is, the less efficiently it works. Make sure the surface of the solar panel is not blocked. Choose a location that receives as much direct sunlight as possible. 100% weatherproof, light grey, measures 25cm x 14cm.