Specification: Voltage: DC5V 1 A Wattage: 12 W Length: 2 M Option:with indicator light, without indicator light How to use: Power on /off: Touch on dimmer body in a quick time. Brightness adjust: Touch stay on dimmer body in a long time. Applications: Perfect to supply power for 5V aquarium led strip lights, or led strip light, table lamp, night light, etc. Package included:1 X 2M USB (Universal Serial Bus) touch dimming light switch