... warranty CE, RoHS, FCC 30W High Power LED Industrial Shop LightsDESCRIPTIONThis LED High Bay Lights provide excellent color rendering, are ... than HID bulbs and ballasts. It is designed for work shop, warehouse, storage room, parking lot, garage, refrigerating chamber, aircraft ... constant current for power supply, so that LED tube without Y-DEALY and flicker.11. High power supply efficiency (>90%) ...