Leviton OSP20-DA0 20A Fluorescent/Incandescent, 120/220/277 Volt AC 60Hz, 1HP at 120VAC, 2HP at 240VAC, Power Pack for Occupancy Sensor, Black Self-contained transformer and relay Internal voltage regulator - regulated 24VDC current, 150mA output Fast installation - mounts inside or outside junction box, or inside fluorescent ballast cavity with a simple twist-on nut Single or multiple luminaries control Heavy duty zero crossing circuitry