This dimming controller supports parallel connection of multiple units. One switch can enable dimming from 0% to 100%, allowing synchronization and individual control of single lamps. As this dimming controller is passive, no external power supply is required. The dimming signal operates within a 0-10V range, with no wattage limitation. The compact design ensures strong compatibility, and the dimming process is smooth without flicker or jitter. Ideal for use with various lighting types, including grow lights, track lights, spotlights, downlights, ceiling lights, panel lights, wall washers, and more. Easy wiring: Brown wire connects to positive, blue wire to negative. Compatible with 0-1/10V dimming signal drivers. Do not connect directly to AC power. To synchronize multiple dimmers in series: Set all dimming controller switches in the group to the ON position, adjust all 0-10V dimmer knobs to maximum brightness, then use any dimmer in the group to control overall brightness levels. Color: Black Material: ABS Package Contents: 1 x LED dimmer switch Note: Lighting and display differences may cause slight variations in color compared to the actual item. Measurement tolerance is +/- 1-3 cm.