890A WinAPEX Auto-Range True RMS Digital Multimeter, Multifunction Tester NCV AC/DC Voltage Current Resistance, Full Protection Auto Power Off Multimeter. True RMS: Provides more accurate readings of AC voltage and current, especially for complex waveforms like those found in modern electronics. Measurement Capabilities: It can measure common electrical units including Volts (AC/DC), Amps (AC/DC), Ohms (resistance), Capacitance, and Frequency (Hz). Special Tests: Includes dedicated modes for Diode testing, Continuity (beeps if there is a complete path), and Non-Contact Voltage (NCV) detection to safely check for live wires. Display: Features a large digital display with an AUTOAPO indicator, which likely stands for "Auto-Power Off" to save battery life.