Triac Dimming - Zi-ZOHNSON T8 LED Shop Light supports DLC Triac dimming, which means it can be controlled by a phase-cut dimmer to adjust the light level smoothly and accurately. 6 Colors in 1 - Our led tube lights offers you the option of choosing your color temperature directly on the fixture. With the flick of a switch, you can choose between soft white(3000k), warm white(3500k), natural white(4000k), daylight(5000k), cool white(6000k) and super bright white(6500k) to find the color temperature for any space and any job with only keep one tube on hand. Easy Installation and Linkable - The 4 foot led shop lights could plug and play. Installation accessories will help you to install quickly and easily. And up to 16 tubes can be connected at the same time (at 277V)