This dimming controller supports connecting multiple lamps in parallel. One switch enables dimming from 0% to 100%, synchronized on/off control, and independent dimming and switching of individual lamps. The controller is passive and does not require an external power supply. Operating voltage is 0-10V, with no power wattage limitation. The compact design offers strong compatibility and ensures a flicker-free and jitter-free dimming performance. Ideal for use with various lighting types, including plant growth lights, track lights, spotlights, downlights, ceiling lights, panel lights, wall washers, and other 0-10V compatible lighting systems. Easy to wire: Connect the brown wire to the positive terminal and the blue wire to the negative terminal. Compatible with various 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 the maximum level. Then, use any single dimmer in the group to control the overall brightness level synchronously. Color: Black Material: ABS Package Contents: 1 x LED dimmer switch Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.