This dimming controller can connect multiple units in parallel. One switch can control dimming from 0% to 100%, allowing synchronization and individual lamp switching. The controller is passive and does not require an external power supply. The dimming voltage range is 0-10V, with no power wattage limit. The compact design offers strong compatibility, and the dimming process is smooth without flicker or jitter. Dimmer switches are widely used with various lighting fixtures, including growth lights, track lights, spotlights, downlights, ceiling lights, panel lights, wall washers, and other compatible lighting systems. Easy to wire: Brown connects to positive, blue connects to negative. Compatible with 0-10V 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 the maximum setting. Then, use any single dimmer in the group to adjust brightness for all synchronized units. Color: Black Material: ABS Package Contents: 1 x LED dimmer switch Note: The package includes only the items listed above. Other accessories are not included. Lighting and display differences may cause slight variations in color compared to the actual product. Measurement error allowance is +/- 1-3 cm.