1、One button to turn on/off, simple operation. 2、BananaJack, not terminal type, with safer and stable probe insertion. 3、With a foldable bracket, can be placed on desktop. 4、ConcaveConvex heat dissipation design ensures longer lifespan of electronicComponents inside the machine. 5、Made of fine quality material, wear-resistant for long service time. 6、The output voltage and current are adjustable, and when testing a singleLED, the voltage and current automatically adjust to output. 7、When the lamp beads breaks down or the probe shortcircuits abnormally, the instrument automatically enters a protectives state. When the abnormality is resolved, it automatically returns to normal and can continue to be used for normal testing. 8、Support TV LED backlight test without take the screen apart. Material: plastics Input voltage: AC180-265V, 50/60Hz Output voltage: DC0-200Volt Output current: ＜30mA Item size: 145 * 85 * 38mm / 5.7 * 3.3 * 1.5in Item weight: 166g / 5.9ounce Package size: 180 * 115 * 50mm / 7.1 * 4.5 * 2.0in Package weight: 278g / 9.8ounce 1 * LED Tester 2 * Test Pen 1 * User Manual