Advantages: - The output of the products is constant current and voltage, which is a real double closed loop protection, protecting both voltage and current. - There are two potentiometers on the product that can adjust the voltage and current, and can set the appropriate voltage and current. If the voltage and current are too large, electronic components will be easily damaged during the test, causing permanent damage. - The output of the product can change its polarity. It can test N polarity or P polarity. - If you do not know anything about electronic semiconductor components, you can also turn the voltage to the maximum and the current to the minimum and press the red high-voltage start button to test without setting. Attributes: - Output voltage: 100-2600VDC (constant current and voltage) - Output current: 0.25-3.7mA (constant current and voltage) - Test for: Transistor, Triode, IGBT, Diode, Zener Diode, Rectifier bridge, Capacitor, Varistor, Undirectional Thyristor, LED LCD TV backlight, LED lamp panel, LED. - Lithium capacity: 3.7V 660mAH - Power supply interface: Type-C - Charging current: 500mA - Dimension: 94 x 70 x 38mm Package Included: - 1 x Transistor Tester