4X Low-Profile Inline Controller Mini 3 Key Dimmer Switch for LED Strip Light Black

To turn it on quickly the middle button.
To turn it and hold the middle button.
To enable standard dimmer mode, the lower button once, then you can the middle button to increase brightness or the lower button to lower brightness.
To enable one of the dynamic modes the top button. There are five dynamic modes. Switch between them 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 once which switches it back to standard dimmer mode.
Features and Specifications:
Voltage: 12V-24V
Max Load: 12A (144W)
Dynamic modes: gradual change, signal light, strobe, breathe, candlelight
Retains setting after power loss
Dimensions: 260mm
Color: Black
Package include:
4 x Low-profile Inline Controller

Only the above package content, other products are not included.
Note: Light reflection 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.