[Low Voltage Passive PWM Dimming Control]: This LED dimmer switch features low voltage passive PWM dimming control for use with 0-10V or 1-10V dimmable LED lights and fixtures. [DC 0/1-10V Knob LED Dimmer Switch]: The DC 0/1-10V knob LED dimmer switch is suitable for controlling a wide range of dimmable LED lights and fixtures. [Easy to Install]: This LED dimmer switch is easy to install and can be integrated into existing lighting systems. The dimmer knob is ideal for use with downlights, track lights, wall washers, grow lights, electronic LED drivers, and electronic ballasts. It is compatible with most LED drivers. [Compact Design]: The dimmer switch has a compact design for easy installation in tight spaces. [High Quality]: This LED dimmer switch is constructed from high-quality materials to ensure durability and long service life. Color: Black Material: Plastic Package Contents: 3 x LED dimmer switch / 1 x LED dimmer switch (depending on selection) Note: Light reflection and display settings may cause slight variations between the color shown and the actual product. Measurement may vary by +/- 1-3 cm.