1、Safety Testing: The test is done in a progressive start mode, the voltage automatically adapts and the current gradually increases, never damaging the lamp beads due to excessive current. 2、LED Lamp Bead Tester: This tester's input voltage is , output voltage is 0‑, power is 18W, no need to remove the screen can determine the backlight is good or bad. 3、Removal Free: This tester can light up the LCD TV screen without removing the screen, which is more convenient and saves time. 4、Digital Display: The tester has a digital display with real time voltage output, with adjustable voltage inside, and the voltage value can be self corrected. 5、Strong Performance: This tester hot and cold ground isolation, never electrocution, power cord and the box in one design, easy to carry out. Item Type: LED Lamp Bead Tester Material: ABS Power: 18W 1 x LED Lamp Bead Tester 1 x Red Test Pen 1 x Black Test Pen 1 x Instruction