What Do the Symbols on a Multimeter Mean?

What Do the Symbols on a Multimeter Mean?

When you first pick up a digital multimeter, the array of symbols on the dial and screen can seem confusing—even intimidating. But understanding these symbols is essential to using your multimeter safely and accurately. Whether you're a DIY hobbyist or a professional electrician, knowing what each symbol represents can help you avoid measurement errors and protect your equipment.

The Most Common Multimeter Symbols Explained

Let’s break down the essential symbols you’ll find on most digital multimeters:

1. V (Voltage)

• V~ or ACV: Alternating Current Voltage (for outlets, household power)

• V— or DCV: Direct Current Voltage (for batteries, circuits)

Example: The BSIDE S10 clearly labels V~ and V— modes with dedicated buttons and a bright display, making voltage selection intuitive.

2. A (Current)

• A~ / ACA: Alternating Current Amperes

• A— / DCA: Direct Current Amperes

Multimeters may have a separate input jack for high-current measurement. Always check the symbol before use.

3. Ω (Resistance)

This symbol represents ohms—the unit of resistance. It’s crucial for testing resistors, continuity in wires, or checking if a fuse is blown.

4. Diode Symbol (Arrow with a line)

Used to test diodes or semiconductors. A good diode typically shows a voltage drop between 0.5 to 0.8V.

5. Continuity (Soundwave or Diode + Sound symbol)

This function emits a beep when there’s a closed loop—very useful for checking wires or fuses.

Note: On the BSIDE ZT-M1, the continuity function beeps reliably even at low resistance, helping users detect shorts with confidence.

6. Capacitance (—|(|—)

This symbol denotes the ability to measure capacitors, often used in AC circuit repairs.

7. Hz (Frequency)

Some multimeters allow frequency measurement, shown as "Hz". Useful for audio equipment or signal troubleshooting.

8. NCV (Non-Contact Voltage)

Often marked with a lightning bolt or "NCV", this mode lets you detect live voltage without touching the wire—ideal for safety checks.

Many BSIDE models, like the AVD06, include a strong NCV detection feature with visual indicators, making it safer for first-time users.

9. Battery Check or hFE

Some multimeters feature battery test functions, or hFE for checking transistor gain.

10. Hold / REL / MAX MIN

These functions allow users to freeze a value, set a relative baseline, or view maximum/minimum readings. Especially helpful during fluctuating signal tests.

Final Thoughts

Multimeter symbols may appear technical at first, but once you understand their meanings, you’ll unlock the full potential of this versatile tool. If you're new to multimeters or seeking an upgrade, BSIDE offers a variety of models with intuitive UI design and helpful labeling, perfect for both professionals and hobbyists.

By taking a few minutes to learn what each symbol does, you’ll reduce the risk of mistakes and improve the accuracy of your measurements.