1、High brightness and high voltage output, compatible with lighting all types of lamp boards, such as LED beads, LED stirng, LED panel and Integrated optical LED, etc. 2、Display output voltage and output current. Intelligent adjustment of voltage and current, automatic adjustment according to the number of LED lights in case of burning. 3、Support testing the capacitance voltage and the diode voltage. No need to disassemble panel to test the LED strips which can save a lot of time for you. 4、Safe protection: double(cold and heat) isolated. 5、Safety design : slow boost, soft start. Increase the current steadily. 6、Gradually bright light, protects your eyes. This LED lamp LED TV backlight tester can find defective LED on the strip in few seconds with automatical voltage and current adjustment. If there is something wrong with LED strip, you can change it or replace the bad LED beads. Applicable to any size LED TV, perfect backlight inspection and maintenance tool. Features: High brightness and high voltage output, compatible with lighting all types of lamp boards, such as LED beads, LED stirng, LED panel and Integrated optical LED, etc. Display output voltage and output current. Intelligent adjustment of voltage and current, automatic adjustment according to the number of LED lights in case of burning. Support testing the capacitance voltage and the diode voltage. No need to disassemble panel to test the LED strips which can save a lot of time for you. Safe protection: double(cold and heat) isolated. Safety design : slow boost, soft start. Increase the current steadily. Gradually bright light, protects your eyes. Specifications: Material: plastic Input voltage: AC 85V-265V Output voltage: 0-320V Output current: 0-40mA Item size: 142 * 82 * 40mm / 5.6 * 3.2 * 1.6in Item weight: 175g / 6.1ounce Package size: 215 * 135 * 65mm / 8.5 * 5.3 * 2.4in Package weight: 349g / 12.3ounce Package list: 1 * Tester 2 * Test Lead 1 * User Manual 1 * Tester 2 * Test Lead 1 * User Manual