This dimming controller can connect multiple units in parallel. One switch can achieve dimming from 0% to 100%, enabling synchronization and individual control of single lamps. As this dimming controller is passive, no external power supply is required. The dimming signal operates on a 0-10V voltage range, with no power wattage limitation. The device has a compact design, wide compatibility, and ensures a flicker-free and smooth dimming performance. Dimmer switches are suitable for various lighting applications including grow lights, track lights, spotlights, downlights, ceiling lights, panel lights, wall washers, and other compatible lighting systems. Easy to wire: Connect brown and blue wires. 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 the maximum level, then use any dimmer in the group to control the overall brightness synchronously. 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. Note: Lighting and display differences may cause slight variations in color compared to the actual product. Measurement may vary by +/- 1-3 cm.