The inst ent is easy to use as long as the components are placed in the testing area and the START button is pressed. Start automatic measurement and testing of parameters related to diodes, istors, resistors, capacitors, and inductors Capable of measuring istors, MOS istors, thyristors, istors, IGBTs(Note: high-power thyristor, IGBT, may not be tested accurately) And it can automatically recognize the foot position (polarity) and display relevant parameters in graphics (such as magnification, , etc.) Can test the encoding value of infrared remote control (only supports format).The inst ent comes with a lithium battery and does not require an external battery to be equipped with a USB charging cable Attention: Before testing the capacitor, it is necessary to discharge it first. Otherwise, directly damage the inst ent. This inst ent is an active inst ent and should not be used to measure live circuit boards. May cause damage to circuit boards and inst ents Material: plastic+metal colour: As shown Package Contents: 1 x Tester 1 set accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.