It can detect NPN and PNP transistor, capacitor, resistor, diode, triode, N-channel and P-channel MOSFET, triac etc.
It also can detect zener diode and has the function of self-calibration.
It can used with infrared decoder to test infrared wave forms.
One button operation, automatically detect and shutdown, and you can press the multi-functional button to close the detector.
Automatically test the pin of a component, and display on the back light LCD screen.