20A Standard Power Pack for Occupancy Sensors, features include Auto ON, Manual ON, Local Switch, Latching Relay; Line Voltage Input: 120/208/220/230/240/277V, 50/60Hz; Low Voltage: Input-24VDC, 2mA, Output-24VDC, 225mA. Housing: 1/2" Threaded nipple w/locknut (fits on or in a 4" sqr box), RoHS Compliant, Title 24 Compliant, ASHRAE 90.1 Compliant, Color: Gray