TotalPond Pond and Landscape LED Lights, 3-piece set The Pond and Landscape LED Lights can be used in and out of the water to illuminate water features and landscapes. Includes 3 energy-efficient LED lights, an automatic dusk-to-dawn sensor, a 12V transformer, and easy-to-change color lenses (red, green, yellow, and blue) These 3W, waterproof lights can be used in and out of the water. Automatic dusk-to-dawn sensor shuts off the lights during the daytime and turns them back on at night. Periodically, your lights may require cleaning with warm water and biodegradable soap for optimal performance.