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. Can be in correct or der 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.