Upgraded version    Multifunction adjustable LED lamp repair tester      working voltage AC 180V-240V  1. Adjustable output voltage, output current.    2. Adjustable brightness lamp beads.    3. Medallions detectable leakage.    4. The two high-precision meter reading data, high accuracy.    5. Automatic adaptation test lamp beads / lamp panel voltage.    6. The voice prompts lamp beads without seeing and improve efficiency.    7. Electrical isolation safer, touch one end of the output power not people. (Note: Do not touch the positive and negative ends at the same time)    8. The string can be accessed by about 100 different types of lights, lamp panels, light board.    9. expertise, professional-quality, trustworthy.    Usage: Suitable for all sizes of power lamp beads single series and parallel LED light board inspection and maintenance. Series and parallel hybrid line can be detected.         Multifunction adjustable LED lamp beads service tester is a test and maintenance equipment LED lamp beads. Specially designed for the majority of electronic enthusiasts. Lamp beads solve encountered during assembly does not shine light does not cause the whole problem. You can quickly identify problems which lamp beads. Thus effectively improve maintenance efficiency and save maintenance time, reduce indirect labor costs.              The operation is very convenient and simple, the red pen and black pen alignment of circuit board or lamp beads can detect positive and negative, normal lamp beads Lights. When the two collide pen, forming pathway lights.    Output voltage adjustment range: 0 ~ 180V (voltage is too high, automatically protected)    Output current range: 0 ~ 20mA               package include :      1pcs tester      2pcs test pen      1pcs leakage detection probe