Function :Add boot voltage detection function . Automatic detection of NPN and PNP transistors, N-channel and P-channel MOSFET, diodes (including dual diode), thyristors, transistors, resistors and capacitors and other components. Automatic test out the pin element and displayed on the LCD . Can be detected to determine the transistor emitter forward bias voltage of the transistor, MOSFET protection diode and the amplification factor of the base . Measure the gate threshold voltage and gate capacitance of the MOSFET . LCD display uses LCD 12864. High test speed, valid component test: 2 seconds (except in the larger capacitor of large capacitance measurement also takes a long time, the measured time of one minute is normal) . Power consumption off mode: less than 20 nA .