JUNSUNMAY DC 5.5x2.1mm to USB LED Touch Inline Dimmer Switch Controller for Single Color, Length 100cm ?This LED dimmer controls 0%-100% brightness by touch-sensitive on/off controller. It is suitable for human sensor lights, soft light strips, counter lights, wall lights, glass curtain wall lights, corridor lights, some LED lighting devices, etc. ?Plug and Play: No cutting and soldering required, easy to install and simple to use. Connect Single Color LED Strip light to the DC power adapter, to adjust brightness by long press, and switch on/off by short press in a cycling pattern ?With memory function: Restart will remember the last adjustment effect ?Easy to use: Small size, easy to carry. Simple and convenient wiring, plug and play ?Operation: ?1. When the hand touches for the first time, the light will light up. When the hand touches again, the light will turn off; ?2. When the hand touches for a long time, the light will slowly turn on from off. When the hand leaves, the light will slowly turn off. Package included: ?1 x Inline Dimmer Switch Controller