Hubbell Building Automations Universal Voltage Power Pack with Manual ON/OFF control provides a unique solution for lighting applications users require both manual ON/OFF control as well as automatic OFF control. The power pack automatically detects input line voltage from 100-277VAC, eliminating the need for voltage specific power packs or multi-voltage power packs that require special wiring based on the input voltage. Capable of switching 20A loads, the power pack also features Zero Arc Point Switching technology that minimizes relay contact wear associated with high inrush loads. The power packs manual ON/OFF input connects to a low voltage momentary switch and enables users to manually control lighting in an area that is also controlled by an occupancy sensor. A single power pack can be used to supply power to up to four sensors, and can also be used to supply power to Hubbell Building Automations MPSA auxiliary relay for multiple circuits. The power pack is plenum rated and mounts easily inside or outside a junction box.