BEETECH B-550 multimeter is stable, highly reliable and with excellent accurate A/D converter as the core for large scale integrated circuit to ensure accurate measurement of AC/DC Voltage, AC/DC current, Resistance,  Capacitance, Frequency, Diode, Continuity and Temperature. All these features make B-550 multimeter to be an ideal tool for field application, laboratory, factory, hobbyist, as well as household applications. To fully utilize this range multimeters, please keep this manual for reference carefully.