"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 Color Gray."