This dimmer control allows for parallel connection of multiple lights. A single switch enables dimming within a 0-100% range, on/off timing, and independent dimming and switching of individual lights. Being passive, the dimmer control requires no external voltage. The dimming voltage is 0-10V, ensuring flicker-free and jitter-free dimming. Compact and highly compatible, this dimmer is perfect for various plant grow lights, track spotlights, floodlights, ceiling lights, panels, wall washers, and other lighting applications! Simple wiring: brown line connects to "+", blue line connects to "-"; compatible with various 0/1-10V dimming signal drivers; DO NOT connect directly to the mains. To synchronize multiple dimmers in series: set all dimmer control switches in the group to the ON position, set all 0-10V dimming knobs in the group to the maximum value, and any 0-10V dimmer in the group can be turned to adjust the dimming of the entire group of lights synchronously. Color: Black Material: ABS Package Contents: 1 x LED Dimmer Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.