This dimming controller can connect a number of lamps in parallel. One swap can understand dimming within the fluctuate of 0~100%, synchronizing on and off, and independent dimming and switching of a unmarried lamp. Because this dimming controller is passive, no exterior voltage is required. The dimming voltage is 0-10V, there isn't any strength wattage limit, the product is small in size, the compatibility is strong, and the dimming assignment has no flicker and jitter. Dimmer swap are broadly utilized in every kind of plant growth lights, song lights, spotlights, downlights, ceiling lights, panel lights, wall washers and different lighting fixtures pairings! Easy to wiring : Brown line connecting "+",Blue line connecting "-";Compatible with diversified 0/1-10V dimming sign drivers ;DO NOT join it with AC energy directly. How to synchronize a number of dimmers in series : All dimming controller switches of the complete group are set to the ON position, all 0-10V dimmer knobs of the entire group are adjusted to the maximum value, and any 0-10V dimmer of the entire organization would be circled to adjust the dimming of the whole organization of lamps synchronously. color:Black Material:ABS Package Contents: 1 x led dimmer swap Only the above kit content, various merchandise should not included. Note: Light capturing and assorted exhibits may cause the colour of the article in the picture somewhat diverse from the genuine thing. The dimension allowed error is +/- 1-3cm.