Description: Tester LED Test Box 2~150mA Mini Cell Phone for Light Emitting Diode Lamp Cell Phone Device Battery Tester LED Tester. It can easily detect the brightness of different light-emitting diodes, the uniformity of light-emitting colors, and the appearance of light detection. 1. Practical device for testing LEDs. Simply insert your LED into the correct holes (which are all marked) and press the button to see the brightness, bulb color, etc. 2. Practical device for testing LEDs (2-150mA) 3. Simply plug your LED into the correct holes (all of which are marked) and press the button to test the brightness, color of the bulb, etc. 4. The top row is for 2-pole LEDs with currents from 2 mA to 30 mA 5. The bottom row is for 4-pin LEDs (Piranha LEDs) with currents from 20mA to 150mA 6. Powered by a 9V battery (not included) 7. Size (L x W x H): approx. 8 x 5.5 x 2.2 cm / 3.15 x 2.16 x 0.87 inches. Package includes: 2 x LED test box testers