This practical multimeter measures both DC and AC voltages and currents. The default autoranging setting automatically selects the best range for your measurements. If a different range is preferred, simply switch it to manual. A built-in buzzer and LED warning light alert you to low resistance, detected voltage and live wires. In low light conditions you can activate the 10 second backlight to view measurements. Use the data hold button to lock them on screen for data capture and analysis.