WIDE USAGE: LED TV backlight tester can be used to test LED lamps, LED panels, individual LED beads, COB light sources, LED TV backlights, monitors, computers, etc. SUPERIOR QUALITY: LED tester adopts high speed microcontroller to do voltage sampling test and drive LED light to display voltage, realizing board integration and reducing defect rate. ADJUSTABLE: The LED TV backlight tester uses a digital display with real time voltage output, with adjustable voltage and self‑calibrating voltage values. SAFETY: 0‑300V adaptive voltage, suitable for most series and parallel lamp bead testing. it adopts a progressive start method, the voltage automatically adapts to the current gradually increasing, will not burn the lamp beads INTEGRATED DESIGN: LED TV backlight tester can be isolated from hot and cold ground, so it will never be electrocuted. The power cord and case are integrated for easy transport on the go.