Product features: 1.One button measurement operation, delayed automatic power off. Shutdown current is only 20nA, support battery operation. 2.Automatic detection of PNP and NPN type bipolar transistors, N, P channel MOSFETs, JFETs Field Effect Tubes, diodes, double diodes, SCRs, resistors, capacitors, inductors. Automatic detection of pin definition. 3. Measure the current amplification factor (B) of the bipolar transistor and the on-voltage (Uf) of the emitter junction. Darlington transistors can be identified by high threshold voltage and high current amplification factor. 4. The protection diodes inside bipolar transistors and MOSFETs can be detected and displayed on the screen. 5. Measure the threshold voltage and gate capacitance of the MOSFET. 6. Support the measurement of two resistors, potentiometer can also be measured. If the potentiometer is adjusted to its end, the tester cannot distinguish between the middle and both ends of the pins. 7. The resolution of the resistance measurement is 0.1 ohms, and the maximum measurement value is 50M ohms. 8. Capacitance measurement range from 25pf to 100mF (100,000uF). Resolution up to 1pF Inductance measurement range is 0.01MH-20H, below 0.01MH will be shown as resistance. 9. The equivalent series resistance (ESR) of capacitors above 2UF can be detected. The resolution is 0.01 ohms. This function is very important for detecting capacitor performance. Material: ABS colour: As shown Package Contents: 1 set of transistor tester with case (without 1 9V battery) 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.