Upowertek BLD series constant current LED drivers are designed for street lights, high bay, sport lights and grow lights. The input voltage is from 90Vac to 305Vac, 347Vac 380Vac 480Vac are also available. Constant Current LED driver has AC input and constant DC output, which is better suitable for the LEDs when compared with constant voltage LED driver. The BLD sereis drivers has 7 year warranty and NFC or Cable programming function, users could adjust the output curernt by NFC or cable, which makes the production very flexible.