Check the listing for details. LCR TC1 TFT Transistor Tester Diode Triode Capacitor Resistor MOSFET. Condition: New. Listed at 30.60 USD. This transistor tester is built-in large-capacity rechargeable lithium battery-350mAh Included, lithium battery voltage detection, Automatic measurement of voltage stabilizing diode (0.01-30V). After detection, align the infrared remote control with the "IR" light, then press the button in the remote control, if the detector successfully decode it, it will display the data code and infrared wave form. Put the pins of component in corresponding area, then dial the little handle and the detector will test it automatically, finally the results will display on the back light TFT screen clearly. Operating Instructions : Short press: Press the key and not less than 10 ms, release key within 1.5 seconds ; Long press: Press the key more than 1.5 seconds