The 20 watt driver is a Class II power supply rated for operating LEDs. It features a universal voltage input. To avoid damage to LEDs, the number of fixtures connected must be within the range limits listed for the driver and be wired in series. Dims down to 20%. Use 18-20 gauge wire for remote installation up to a maximum of 50ft. National and local codes should be followed during installation. Enclosure box version is listed for code requirements.