Fangrui Product Details High Brightness And High Voltage Output, Compatible With Led Lamp Beads, Led Lamp String, Led Panel, Integrated Optical Led And Other Lamp Panel Lighting. Display Output Voltage And Output Current. The Voltage And Current Are Intelligently Adjusted. Automatically Adjusted According To The Number Of Led Lights To Prevent Burnout. Support Testing Capacitor Voltage And Diode Voltage. You Can Test Led Strips Without Disassembling The Panel, Which Can Save You A Lot Of Time. Safety Protection: Double (hot And Cold) Isolation. Safety Design: Slow Boost, Soft Start. Steadily Increase The Current. The Gradually Brighter Light Protects Your Eyes. This Led Tv Backlight Tester Can Find The Defective Led On The Light Bar Within A Few Seconds Through Automatic Voltage And Current Adjustment. If There Is A Problem With The Led Light Bar, You Can It Or The Bad Led Light Bead. Suitable For Any Size Led Tv, Backlight Inspection And Maintenance Tool. Output Voltage:0-230v Output Current:0-25ma Item