OSP20-D0 Power Pack for Occupancy Sensor, 20 Amp FL/INC, 120-277VAC 60Hz, 1HP at 120VAC, 2HP at 240VAC, The Leviton OSP20-D0 is an occupancy sensor power pack from Leviton Lighting Controls product line. This particular model is designed to be used with Leviton Occupancy Sensors. You can use it in classrooms, conference rooms and where the optimal lightning and energy savings are desired. It features a single or multiple luminaire control.