Leviton OPP20-RD4  20-Amp Super Duty Power Pack for Occupancy Sensors, Basic with Auto-On, Manual-On, Local Switch and Photocell Inputs, Gray First true industry-exclusive "fail safe" design assures lights ON meeting life safety requirements of NFPA 101 Robust power pack meets intense plug load control requirements of CA Title 24/ASHRAE 90.1 Industry exclusive Switched Daylighting Power Pack models for use with Wall Switches, Occupancy Sensors and Photocells Robust and reliable mechanical latching relays specifically designed to operate LED's and high inrush electronic ballast loads Supports a wide range of applications such as switched daylighting, occupancy sensing control, bi-level switching, & metering/mechanical applications