This LED tester using 8-bit high-speed single-chip driver LED digital display voltage, the output voltage automatically adapt it according to the load. Using self-recovery insurance, the chip comes with overheating protections, over-current protections, hot and cold isolation. If you are interested in this product, come and hace a try, it will ot let you down. Features: Wide Applications: This LED light tester suitable for one LED beads, light bars, LED string, LED panel and intergrated optical LED. Capacitance&Diode Voltage Testing: This tool can be used for testing the capacitance voltage and diode voltage. Easy to Use: With this test tool, you do not need to disassemble the panel to test the LED backlights. Automatically adapt to voltage and current and this tool can automatically identify lamp beads and light bars. Double isolated safety protections and with the voltage and current intelligent adjustment function. Portable size and easy to carry, you can put it into your tool bags to carry. LED digital display screen for you to read the testing data more clearly, you can get the testing data easily. Specifications: Material: plastics Adapter: EUPlug, USA Plug (optional) Input voltage: AC 85-265V Output voltage: Direct current 0-300V Item size: 94 * 57 * 31mm / 3.7 * 2.2 * 1.2in Item weight: 110g / 3.9ounce Package size: 110 * 65 * 40mm / 4.3 * 2.6 * 1.6in Package weight: 200g / 7.1ounce Packing list: 1 * LED Tester 2 * Test Pen with Line 1 * Power Cable with Adapter (Optional) 1 * User Manual Wide Applications: This LED light tester suitable for one LED beads, light bars, LED string, LED panel and intergrated optical LED. Capacitance&Diode Voltage Testing: This tool can be used for testing the capacitance voltage and diode voltage. Easy to Use: With this test tool, you do not need to disassemble the panel to test the LED backlights. Automatically adapt to voltage and current and this tool can automatically identify lamp beads and light bars. Double isolated safet