PP and UPP Series Power Packs provide both the 24 V power supply to operate LutronR wired occupancy sensors, as well as the 16 A line voltage relay to control the load, in one compact housing. The unit can be mounted inside ballast enclosure or inside/outside a junction box.The manual ON Power Pack (-DV-M) is used to provide a vacancy solution when paired with LutronR wired occupancy sensors. A low voltage momentary switch should be used to manually turn ON the load while the sensor automatically shuts the load OFF when unoccupied. Pressing the momentary switch can also turn the load OFF. The auxiliary Power Pack (-SH) must be used in conjunction with at least one line voltage Power Pack and one Lutron wired occupancy sensor to switch additional loads.