The tester is stable and easy to use which can automatically read out the accurate data, and is suitable for electronic enthusiasts, electronic developers, designers, and electronic repair. It can measure all kinds of resistance, capacitance, inductance, two tubes,transistors, SCR, MOS field effect tube; can determine the device type, polar, pin output HFE,threshold voltage, the junction capacitance of the field effect tube. It is particularly suitable for transistor pairing and hybrid surface mount component identification, is the best partner of amateur DIYer