Features 1、The resistance uses 1° metal film resistor, with good performance 2、Strict quality control and quality assurance, high safety factor, can be used with peace of mind 3、Using high-quality materials, strong and durable, has a long service life 4、Can automatically detect the pin layout of detected parts 5、Measure the current amplification factor of the bipolar transistor and the voltage of the base emitter threshold Specification Item Type: MK-328 Transistor Tester 1. Key operation for automatic shutdown 2. Battery operation is possible because the shutdown current is only about 20mA 3. Automatic detection of NPN and PNP bipolar transistors, N- and P-channel MOSFETs, JFETs, diodes, dual diodes, unidirectional thyristors and bidirectional thyristors. 4. Automatically detect the pin layout of the detected parts. 8. Measure and display up to four decimal digit values ​​in the right dimension. All symbols are surrounded by the probe number of the Tester.So potentiometer. If the potentiometer is adjusted to one of its ends, the tester cannot distinguish the middle pin from the end pin. 9. The resistance measurement with resolution is 0.1° and can measure up to 50MΩ 10. Can detect and measure a capacitor. It displays numbers with up to four decimal places in the right dimension. The value can be from 30pF to 100mF. The resolution can get 1pF. 11. For those with a capacity value higher than 2μF equivalent. The serial resistance (ESR) has a resolution of 0.01Ω and displays two significant decimal digits. 15. Measure the capacity of a single diode in the opposite direction. If the base is connected and only one collector or emitter is connected, the bipolar transistor can also be analyzed 16. Only one measurement is needed to find the connection of the rectifier bridge. 17. Capacitors with values ​​lower than 30pF cannot usually be detected, but they can be measured together with parallel diodes or parallel capacitors of at least 30pF.In, so the capacity value of the parallel components must be subtracted. 18. Can measure the inductance resistance is less than 2100Ω, the measurement range is 0.01mH + 20H, but the accuracy is not very good. The measurement result is displayed only when a single component is connected. 19. The test time is about two seconds. Only the capacity or inductance measurement can extend the period. Package List 1 x Tester 3 x Test Pen 1 x Motherboard