The GLC-100 Series constant-current AC/DC LED power supplies accept a universal input voltage of 100 to 277 Vac and, depending on the model, deliver outputs of 1.75A, 2.1A, 2.45A, 2.8A, 3.2A, or 4.2A with a self-adjusting output voltage from 15 to 54 Vdc range. All models are enclosed to IP67 standards in extruded aluminum metal case design and suit virtually all LED lighting applications. Efficiency is in the 90% range with active PFC greater than 0.9. GREEN WATT POWER, Concord, CA. (800) 542-3355.