Fangrui Product Details Lcr-t4 Graphical Multi-function Tester Resistor + Capacitor + Diode + Scr + Inductor + Transistor + Mos Tube The Lcd Is A 12864 Lcd Display With Backlight, And The Backlight Color Is Generally Yellow-green. The Power Supply Is A 9v Stacked Battery. If The Power Supply Is Long-term, 2 Lithium Batteries Can Be Used To Form An 8.4v Battery Pack For Power Supply. Newly Added Power-on Voltage Detection Function Automatically Detect Npn And Pnp Transistors, N-channel And P-channel Mosfets, Diodes (including Dual Diodes), Thyristors, Triodes, Resistors And Capacitors And Other Components, Automatically Test The Pins Of Components And Display Them On The Lcd Can Detect The Amplification Factor And Cardinality Of Transistors, Mosfet Protection Diodes, Etc. To Determine The Forward Bias Voltage Of The Emitter Transistor Measure The Gate Threshold Voltage And Gate Capacitance Of Mosfet The Display Uses 12864 Lcd Liquid Crystal (128 * 64 Characters) Higher Test Speed, Effective Component Test: Within 2 Seconds (exc