you need a useful tool to test the LEDTV backlight strips.You can find the problem as you 't need to disassemble your LED TV to test LED strips which can save a lot of time .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 , you can change it or replace the bad LED beads.Applicable to any size LED TV , perfect backlight inspection and maintenance tool It is really a good tool for Technician.Input Voltage: AC85V-265VOutput Voltage: 0-320VOutput current:0-35mAMain Application:Suitable for single LED beads, LED stirng, LED panel and Integrated optical LEDSupport 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 .Safe Protection: Double IsolatedBurning protection: Voltage and Current Intelligent AdjustmentSafety design : Slow boost , soft . Increase the current steadily.Plug Type: US Plug, it applies to Canada, , Mexico, Thailand, Taiwan, the , the Philippines and so on.Colour:As ShownMaterial:plasticVoltage: AC100-240VPackage Contents:1 x LED tester1 x test leadsOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.