RAB motion and heat sensing switch is 12 volt DC powered so it can work full time even if your inverter is off or in standby mode. Turns lights on at approach, and holds for adjustable time, 5 seconds to 12 minutes after motion stops. Sensitivity distance is adjustable, up to about 50 feet out, farther in colder weather with a test LED showing pick-up area.. Connect directly to any 12 volt light, or use a 12 volt relay to switch a 120 volt light. Set for night only operation, or use as security alarm, by setting for day/night operation. Switches 8 amp DC. 7 milliamps idling; 44 milliamps when activated. 10 year warranty PLEASE NOTE THAT OUR 12V DC LIGHTS DO NOT COME WITH 120V AC TRANSFORMERS. Quality and performance are excellent. We use them at Backwoods!