PSDM-100W-12V is a constant voltage Class 2 LED driver equipped with a magnetic transformer core. It features built-in protection for both the load and the driver via auto-reset breakers (one on the input and one on the output). Its durable, coated metal box includes 2 knock-outs, one on each side, for easy installation that complies with electrical code standards. Compatible with any standard MLV/incandescent TRIAC (leading edge) dimmer switch.