In a 0-10V dimmer, sourcing control provides the low-voltage control signal to the fixture, while sinking control receives or draws that signal from a compatible ballast or LED driver. A dimmer that supports both sinking and sourcing can accommodate different control methods, but the dimmer and fixture should use the same method for proper operation.

0-10V dimmers use a low-voltage control signal to adjust the brightness of compatible LED drivers or fluorescent ballasts. A built-in relay separately switches line voltage on or off, allowing the lighting load to turn off fully while the 0-10V signal manages its dimming level.

Before selecting 0-10V dimmers, confirm the fixture or ballast requirements, the line voltage, and whether the control circuit uses 0-10V or 1-10V wiring with sinking or sourcing control. Check whether the installation includes a neutral wire, since some in-wall models with backlit, engravable buttons require one, and verify whether a built-in relay is needed for separate on/off control.

Integrators should choose multi-channel 0-10V dimmers when a centralized lighting system needs to control multiple dimmable LED or fluorescent lighting circuits from one location. They can group fixtures by channel, pair channels with relays for separate on and off control, and use low-voltage outputs to trigger external power relays when the project requires it.