The GLC-50 Series constant current AC/DC LED power supplies accept a universal ac input from 100 to 277 Vac and deliver a 50W output. Five constant-current output options include 1.05A, 1.4A, 1.75A, 2.1A, and 2.8A and self-adjusting output voltages span 12 to 48 Vdc, depending on the model. All models meet IP67 standards via their aluminum metal case design. Other features include efficiencies up to 90%, an active PFC greater than 0.9, and a variety of protection features. GREEN WATT POWER, Concord, CA. (800) 542-3355.