LED power supplies transform and regulate power a line voltagepower source into low voltage power for use with LED lighting. TheTEB-60L-12DC power supply accepts input voltage of 120 volts AC andoutputs 12 volts DC power up to 60 watts. The low voltage output maybe dimmed using an electronic low voltage dimmer sold separately .Minimum load 15 watts. The aluminum enclosure with service shutoffswitch allows electrical connections to be made inside the box.Knockouts are provided for use with 1/2 in conduit. Comes with on/offswitch and may also be ordered with a 6 foot cord/plug.