It is an inexpensive and widely used transistor detector. You can use it to detect NPN and PNP transistor, capacitor, resistor, diode, triode, N-channel and P-channel MOSFET, triac and battery, etc. Characteristics: It can be widely used to detect NPN and PNP transistors, capacitors, resistors, diodes, triodes, N-channel and P-channel MOSFET, IGBT, JFET, triac and battery, etc. It can also detect zener diode and ma self-calibration function. Once detected, align the infrared remote control with the “IR” light, then press the button on the remote control if the detector successfully decodes it, displays the data code and infrared waveform. One-button operation, automatic detection and shutdown, and you can also press the multifunction button to close the detector. Place the component pins in the appropriate area, then select a small handle, and the detector will test it automatically, eventually the results will be clearly displayed on the backlit TFT screen. Unlike a regular black and white display, this detector will show the results in color. Technical data: Material: ABS Power Mode: Rechargeable Lithium Battery Display: TFT 160 x 128 screen Diode range: conduction voltage <4,50 V Zener diode: Transistor test area: 0,01-4,5V Zener diode test area: 0,01-20V Triac range: gate trigger current <6mA Capacity: 25pF-100mF Resistor: 0,01-50MΩ Induction coil: 0,01 mH-20 H Battery: 0,1-4,5 V Product Size: 9*7*2.7mm/3.5*2.8 * 1.1in Item Weight: 84 g / 2,9 oz Package Weight: 132 g / 4,7 oz Note: Before testing, discharge the electronic components to protect the detector. When the voltage and internal battery are below 3V, charge them before use. Use a 5V battery or USB interface to charge. List of packages: 1 * Transistor Tester 1 * set of electronic components 1 * Cable 3 * hak test