Intelligent light control: When the solar panel senses a certain amount of light, it turns off automatically. When the light is lowered to a certain degree, it will be automatically illuminated. (The solar panels need to be illuminated to absorb solar energy). Simple Installation: For installation on hard surfaces, simply turn the switch on and off to level. Waterproof IP65, perfect for outdoor lighting. Energy-saving, powered by solar, no electric bill, no wiring.