The LED Refrigeration Light Occupancy sensor requires a LED Refrigeration Light Dimming Controller in order to control LED lighting. It utilizes a passive infra-red (PIR) sensor to detect body heat and trigger Dimming Controller. It features an adjustable turn-off delay using a screw on the back side and an integrated RJ45 cable. Works with 24V DC supplied to the Dimming Controller.Adjustable turn-off time from 30 seconds to 30 minutes. 6ft RJ45 cable for connection to a Dimming Controller. Has a 14-foot diameter detection circle when mounted 8 feet off the ground. Must have a direct line of site to the detection area. UL 88T9 listed.