LO-PRO Jct Box Driver Combo - 12V OMNIDRIVE ELV - 60W LO-PRO Junction Box - A low-profile and rugged steel enclosure that complies with electrical codes requiring junction boxes to separate household and low voltage wiring. They offer superior dimming performance for an LED power supply when paired with: TRIAC dimmer controls, magnetic low voltage (MLV), electronic low voltage (ELV) and incandescent/halogen dimmer switches, as well as 3/4/5-way and on/off switching.. They offer superior dimming performance for the widest selection of dimming switches.