Handy device for testing LEDs (2-150mA). Simply plug your LED into the correct holes and push the button to test its brightness, illuminant color, etc. The top row is for 2 pin LEDs with currents ranging from 2mA – 30mA. The bottom row is for 4 pin LEDs (super-flux LEDs) with currents ranging from 20mA – 150mA. Powered by a 9V battery (Not included). Approximate size: 3.15″ x 2.16″ x 0.87″

