Automatic test the pin of a component, and display on the LCD backlight. Measuring bipolar transistor current amplification factor and base-emitter threshold voltage. Powered by 9V layer-built battery, can use 2 li-ion batteries to form new features * Automatic detection of NPN and PNP transistors, N-channel and P-channel MOSFETs, diodes (including elements such as double diodes, thyristors, triodes, resistors and capacitors, *Automatically test out the pins of the components and display them on the LCD * It can detect the amplification factor and base number of transistors, MOSFET protection diodes, etc. to determine the forward bias voltage of the emitter transistor *Measure gate threshold voltage and gate capacitance of MOSFETs *The display uses 12864 lcd liquid crystal (128*64 characters) *Higher test speed, valid period for component test: within 2 seconds (except for larger capacitors, the measurement of large capacitors also takes a long time, the measurement time is 1 minute is normal) * One-key operation, start-up test, one-key to get it. *Power consumption off mode: less than 20 nA *Automatic shutdown function can avoid unnecessary waste, save battery energy and improve battery life. Color: Multicolor Size: About 6.3*7.1cm Delivery Quantity: 1 Piece Note that this product does not contain batteries