Incredible quality and stable performance UniFi LED is smartly designed for providing adjustable and high-efficiency indoor lightning to businesses of all sizes. Well-built LED Panel is energy efficient that fits into a standard ( 2'x 2' Square) T-grid drop ceiling and runs on 802.3at PoE+. It has a brightness of 2,300 lm and high luminous efficacy of 100 lm/W*. Utilizing long-lasting LEDs that provide over 50,000+ hours of luminance, the LED panel requires very little maintenance. On the other hand, Dimmer Switch using 802.3af PoE power lets you directly control one or multiple LED Panels. You can switch panels on/off or adjust their brightness (10-100%). ISP Supplies is a certified distributor of Ubiquiti offering its certified LED at the most economical prices.