AC 220V Screen Led Backlighting LED LCD TV LED backlighti Tester Lamp beads Light board LED light detection Tool Specifications: Multifunction adjustable LED lamp rep tester working voltage AC 220V Output voltage adjustment range: 0 ~ 230V Output current range: 0 ~ 25mA Use range: all LED light board, LED TV backlight Features: 1. Adjustable output voltage, 2. Adjustable brightness lamp beads. 3. Medallions detectable leakage. 4. high-precision meter reading data, high accuracy. 5. Automatic adaptation test lamp beads / lamp panel voltage. 6.Circuit for protection,won'for t burn out lamp 7. Electrical isolation safer, for touch one end of the output power not people. (Note: Do not for touch the positive and negative ends at the same for 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 for 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. Package included: 1pcs tester 2pcs test pen