Power supply box for 18" LED light bar (item # 110) when used to light 2 to 5 seperate light bars. The box has a 4 amp power supply with 5 jacks. The jack and plug from the light bar are 5.5mm x 2.1mm and the same as all of the power supply cords CR2S sells. This box could also be used for lighting 1 to 5 individual display boxes. Output is 12 volts DC at 4 amps (48 watts). You will need to specify additional extension cords needed. Unit comes with only two cords.