Switches lights on at dusk and off after your chosen period; 2, 4, 6 or 8 hours. Ideal for outdoor lighting during the evening, for security and convenience. Also ideal for choice for shop window display lighting, or advertising systems. This quality is a reliable photocell sensor with ambient light memory function. It is IP55 rated, suitable for outdoor use and is easy to install. It may be adjusted to operate at your chosen light level from as low as 3 lux to a light level as high as 1000 lux. Load: 1000W Incandescent/ 500W Fluorescent/inductive and 200W LED