The Philips OccuSwitch Classic Series Power Packs provide low voltage control for occupancy sensors. Typical applications include: bi-level lighting applications, classrooms, conference rooms, offices, and any optimal lighting and energy savings are desired. Containing both a 24VDC supply and a 20A line voltage relay for most models, these power packs provide low voltage power and line voltage control for Philips LRM series occupancy sensors. Versions include auto-on and manual-on inputs for occupancy sensors, hold-on and hold-off capabilities, and a local input for momentary or maintained dry contact switches. The internal relay can control up to 20A for a 120, 230, or 277VAC ballast load and 15A for a 347VAC ballast loads. The relay can control 20A for a 120VAC incandescent load. LCA Series Power Packsconveniently mount in a knockout hole of a standard junction box. The units can be placed inside or outside the junction box with a simple twist-on nut.