These inline dimmer switches a low- way to control lights. from 8 levels of brightness, turn lights on or off, or a dynamic mode for added effect. Installation is simple, just connect it between the driver and the strip. Use this with strip lighting that uses a barrel connector, such as single color light kits.To turn it on quickly press the middle button.To turn it off press and hold the middle button.To enable standard dimmer mode, press the lower button , then you can press the middle button to increase brightness or press the lower button to lower brightness.To enable one of the dynamic modes press the top button. There are dynamic modes. Switch between by pressing the top button. The speed of the dynamic modes can be adjusted by pressing the middle button. To exit dynamic mode, click the lower button which switches it back to standard dimmer mode.Features and Specifications: Voltage: 12V-24VMax Load: 12A (144W)Dynamic modes: gradual change, signal light, strobe, , candlelightRetains setting after power lossDimensions: 260mmColor: BlackPackage include: 1 x Low- Inline ControllerNote: Light 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.