FNIRSI LCR-P1 Transistor Tester FNIRSI LCR-P1 transistor tester can be used for the measurement and analysis of NPN, PNP, triode, MOS, field effect transistor (FET), diode, Zener diode, capacitor, resistor, inductor, battery, etc. FNIRSI LCR-P1 transistor detector supports the analysis of NEC infrared protocol code, so it can be used for the debugging and maintenance of remote control equipment. 1.44 inch full -color screen, clearly visible, 300 mah battery, Type-c interface for charging and data transmission, firmware upgrade. The capacitance resistance esr tester automatically identifies undischarged capacitors and automatically discharges them at the moment of insertion and locking, effectively avoiding accidental burning.