WEICHUAN Digital LCD Multimeter - AC/DC Volt Amp Ohm Meter Ammeter Resistance Capacitance Designed to safely and accurately troubleshoot automotive and household electrical problems. Accurately measures current, voltage, resistance, and more COMS integrated circuit, the principle of double integral A / D conversion. Full-featured the wrong stalls as well as over-range protection. Anti-burn performance better automatic shutdown function.Automatic zero, auto-polarity selection.