Intelligent Photoelectric Sensor: The delay function in the sensor light control prevents the light controller from turning off the lights due to passing car headlights or other stray light
Convert Fixtures to Automatic On/Off: Dusk to dawn photocell sensors allows your lighting to automatically turn on at dusk and off at dawn; It will automatically turn on when the light level is 10-20 lumens and turn off when the light level reaches 30-60 lumens