Features: Micro-controller using 8MHz external crystal, better measurement accuracy. Automatically detect NPN, PNP bipolar transistors, N-channel and P-channel MOS FET, JFET, diodes, dual diode, thyristor small power unidirectional and bidirectional thyristor. One button operation, automatic shutdown with only 20nA shutdown current. Each test takes about two seconds, with only large capacitors and inductance measurements taking longer. The transistor tester can be in correct order and the diode symbol display two diodes, and gives the diode forward voltage. Specifications: Shutdown Current: 20nA Resistance Measurement: Max. 50MΩ Resistance Resolution: 0.1Ω Capacitance Measurement: 30pF~100mF Capacitance Resolution: 1pF Inductance Measurement: 0.01mH-20H Color: Grey Size: Approx. 123 x 80 x 33mm / 4.84 x 3.15 x 1.3in Weight: Approx. 198g Package Included: 1 x MK-168 Transistor Tester 1 x SMD Adapter Test 3 x Test Clips (Red, Green, Yellow) Notice: Before measuring capacitance, the capacitor must be discharged, otherwise very likely damage the meter. Automatic detection: The transistor tester can automatically detect NPN, PNP bipolar transistors, N-channel and P-channel MOS field effect transistors, JFETs, diodes, dual diodes, thyristors, low-power unidirectional and bidirectional thyristors. Automatic shutdown: The diode capacitance tester can be operated by one key, and it can automatically shut down, with only 20nA shutdown current, fast and simple operation, and the maximum resistance measurement is 50MΩ Two-second test: Each test of a transistor meter takes about two seconds, and only large capacitance and inductance measurements take longer. The inductance test range is 0.01mH-20H, and the capacitance resolution is 1pF Forward voltage: The micro controller uses an 8MHz external crystal oscillator, which has higher measurement accuracy. The two diodes can be displayed in the correct order and the diode symbol, and the forward voltage of the diodes can be given. Dimensions: Diode capacitance meter is about 123 x 80 x 33 mm / 4.84 x 3.15 x 1.3 inches, and weighs about 198g. Before measuring the capacitance, the capacitor must be discharged, otherwise the meter may be damaged.