This is a meter to measure resistance, inductance and capacitance. It can automatically detect NPN and PNP , N- and P-Channel MOSFETs, diodes, , resistors, capacitors, and etc. It can also be used to detect infrared wave forms. Features - - Material: Electron component. - Size: 15x4x2cm - It can be widely used to detect NPN and PNP , capacitor, resistor, diode, triode, N-channel and P-channel MOSFET, , JFET, triac and battery etc. - It can also be used to detect infrared wave forms. - It also can detect diode and has the function of self-calibration. - After detection, the infrared with the "IR" light, then press the button in the remote control, if the detector successfully decode it, it will display the and infrared . - One button operation, automatically detect and shutdown, and you can press the multi-functional button to close the detector too. - Warm Tip: Dear buyer, Due to lighting effect,monitor’s brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: 1 set of Tester