Feature: 1. Check the Fault: LED TV backlight tester can test LED TV backlight and separate test TV constant current board, easily determine the LCD TV fault problem 2. Voltage Test: LED TV backlight tester with manual stepless presetting of the open circuit voltage (20‑330VDC), intelligent and fully automatic adaptation to the LED light source voltage during testing, no adjustment required. 3. Current Test: LED TV backlight tester can manually and steplessly preset the maximum short circuit limit current (20‑150mA), the current is intelligently and fully automatic during the test. 4. Effective Test: When the output voltage is preset to 20 or below, the current of 1mA grade can be used to test offline the voltage parameters of the power supply legs of a variety of ICs, which can simply determine whether the IC is good or bad. 5. Easy to Use: LED lamp tester has a special additional lmA accuracy wide voltage (0‑330V) constant current source output, which allows you to develop various clever applications on your own. 6. Widely Used: LED TV tester is suitable for forward and reverse voltages of diodes, voltage regulators, transistors, MS tubes, etc., voltage resistance or breakdown voltage of capacitors varistors, TVS transient diodes, etc. up to 330V. Specification: Item Type: LED Backlight Tester Material: ABS Model: KT4H Input Voltage: AC 85-265V Output Voltage: DC 0-330V(Auto, Adjustable) Voltmeter Accuracy: ≤(±0.5±1%Vout)V Internal Output Current: 20-150mA (Auto, Adjustable) Constant Current Board Test Current: 0-999mA Ammeter Accuracy: ≤(±2±1%Iout)mA Input Power: 50VA (Maximum) 0 Working Stability: -20℃~+40℃ . Package List: 1 x LED Backlight Tester 1 x Power Cord 1 x Constant Current Board Socket Connection Cable 1 x Constant Current Board Tester Connection Cable 2 x Meter Pen 1 x Manual Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.