Photo-electric lighting controller Nightmatic 2000 provides automatic night-time lighting for building facades as well as for premises, gardens and other spaces The dusk till dawn sensor detects ambient brightness Automatically switches connected lights ON when light levels fall to twilight threshold and OFF again at dawn Time and twilight threshold can be adjusted to any chosen setting Reliable whether it's raining, snowing, blowing a gale or you simply have something better to do Photocell light switch suitable for wall mounting