![]() The horseshoe or omega symbol on the multimeter represents Ohms, which is the measurement unit for resistance. The separate AC and DC millivolts symbols are usually present when all the ranges are not listed at the regular AC and DC voltage sections. The yellow icon serves as a secondary function used to switch to the DC millivolts setting. If the device or circuit you test uses extremely low AC voltage, then this setting helps the multimeter recognize this and give you a more accurate reading. “mV~” is used to measure millivolts, which are much smaller ranges of AC voltage. It may also be labeled “VDC” and come with six different ranges 2m, 200m, 2V, 20V, 200V, and 600V in some multimeters. “V-” is a setting used to measure DC voltage typically from a circuit or devices that make use of batteries. The additional “Hz” imprint in yellow represents the Shift: Hertz secondary function used to measure the AC voltage frequency of your circuit or equipment. This usually comes with two different ranges 200V~ and 600V~, and may also be labeled “VAC”. “V~” is a dedicated AC voltage setting that is typically used to measure voltages between 100 and 240 AC volts around homes and offices. Number 8: AC Voltage and Shift: HerTz Symbols This is the switch to simply turn on or turn off the multimeter. Loz serves as “Low Impendence” and defines the range of resistance (4 – 16 Ohms) needed for the Auto-V function to work. The Auto-V setting allows multimeters to automatically detect the type of voltage you are measuring (either AC or DC voltage) and get in the appropriate measurement mode and range. You set the brightness level of your screen for easier use whether indoors or outdoors. The brightness button lets you turn off or turn on the backlight of your display. These options are usually placed beside the primary functions, represented with a different color imprint (like yellow or red), and are typically related to temperature and capacitance measurements. ![]() The function button is used to activate the secondary options on multimeters. The multimeter handles the ranging by itself. Nonetheless, the more modern meters come with an auto-ranging feature that simply boycotts the need for this button. The Range button is used to switch between these different range limits for a more accurate and precise reading. Note that multimeters measure at different levels, for example, there is a 200V limit and a 600V limit for AC voltage. The Range button is used to switch between different ranges for measurements. You preset a maximum and minimum limit for the multimeter reading, take a steady measurement, hit the MIN MAX button, and receive beeps when any of the limits are crossed. Number 2: MIN MAX ButtonĬommon with higher-end multimeters, the Min Max function helps you to register minimum and maximum values within a range to monitor reading fluctuations or anomalies. It is great to use if you work with very precise measurements that are hard to memorize or you aren’t looking at the multimeter when measuring. When pressed, your measurement remains on the multimeter screen after you have taken your probes off the device you are testing. The hold button is simply used to freeze a multimeter reading on the screen. Our guide tells you the meaning of every multimeter symbol you may come across over time and without much ado, let’s get into it. It puts the multimeter itself and even you at risk of harm. Using a multimeter without knowing what its symbols mean doesn’t just make your electrical diagnostic processes almost impossible. Are you new to testing electrical equipment with a multimeter, or do the icons and symbols on the multimeter seem confusing to you? If your answer to these is yes, then we are glad you came here before proceeding further.
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