Our 0-300V adaptive voltage TV backlight tester with current and voltage display is suitable for all LED application. Automatic detection of output voltage and current. It can test any size LED backlight and lamp beads. High brightness, no need to open the screen can judge the quality of backlight. Using progressive start mode, the voltage automatically adapt, the current gradually increased, the lamp strip and lamp beads will not be burnt. Digital display real-time voltage output, with adjustable voltage, voltage value can be self-calibration. It is constructed of ABS material. The length of this product is 10.4cm, the width is 6.3cm and the height is 3.6cm. This product is perfectly suitable for home, household, factory, plant, and so on. Item Name: TV Backlight Tester Material: ABS Input Voltage: 85-265V Output Voltage: 0-300V Power: 18W Socket Type: US Plug/UK Plug/EU Plug Features: Screen-free, Automatic Detection, Reusable Size Details: 10.4cm x 6.3cm x 3.6cm/4.09" x 2.48" x 1.42" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x TV Backlight Tester 2 x Pens 1 x User Manual