DROK Multifunction Mega328 NPN/PNP Transistor Checker Capacitor Resistance FET Inductance Diode SCR/MOSFET Monitor with Capacitor ESR Testing Function Green Backlight Working power: DV 9V; resistance: 0 5-50m; capacitor: 25pf-100000uf; Inductance: 0 01MH - 20H Has starting Voltage detection function; Auto power off function; one-button operation Automatically test out the pin element and displayed on the 12864 lcd(128*64 characters) High test speed, valid component test: 2 seconds; power consumption off mode: less than 20 na Can measure mosfet and determine forward bias Voltage of the emitter Transistor