The CM-PC-ADC Series combines the CM-PC On/Off Photocell sensor with the CM-ADC Automatic Dimming Control sensor to provide the most intelligent control of lighting for daylight harvesting applications. Ideal for public spaces with windows like vestibules, corridors, or bathrooms; the sensors work by monitoring daylight conditions in a room, then controlling the lighting so as to insure that adequate lighting levels are maintained. The CM-PC-ADC can be used alone or as part of an occupancy sensor system The sensors are powered with 12 to 24 VAC/VDC and typically operate with a PP-20 or MP-20 Power Pack; enabling complete 20 Amp circuits to be controlled.