A voltmeter measures the electrical potential (voltage) between two points, which helps you understand if power is present and at about what level. Common uses include:

• Checking outlets: See if a receptacle is delivering expected AC voltage.
• Testing batteries: Get a quick read on a battery or power supply’s DC voltage.
• Troubleshooting: Track down why lights flicker or devices won’t power on.
• Monitoring equipment: Keep an eye on generator, inverter, or panel voltages.

Some options are plug-in displays for quick monitoring or handheld meters for more detailed checks. Always connect probes in parallel for voltage measurements, keep hands clear of live conductors, and consider non-contact voltage (NCV) features for an added layer of safety.

It’s important not to use your body as a test. Instead, try one of these approaches:

• Use a simple outlet tester: Plug-in testers can indicate typical wiring issues (open ground, reversed hot/neutral, etc.) without handling probes.
• Use a digital multimeter: Carefully measure AC voltage between the hot and ground terminals, then between hot and neutral. Readings between hot/ground are typically similar to hot/neutral, while neutral/ground is generally low. Results can vary, so compare multiple readings and follow your meter’s instructions.

Safety tips: Work with dry hands, use insulated probes, and avoid opening panels. Non-contact voltage (NCV) features can help identify the hot conductor. If you’re unsure or readings seem inconsistent, consider consulting a licensed electrician.

A voltmeter focuses on one job: measuring voltage. It’s great for quick checks, like verifying outlet or battery voltage, and some plug-in styles provide constant monitoring.

A multimeter combines several tools. In addition to voltage, it can measure current (amps) and resistance (ohms), and many models add features like continuity and diode tests, capacitance, frequency, duty cycle, temperature, and non-contact voltage (NCV). Clamp meter versions measure AC current without opening the circuit.

If you just want simple voltage reads, a voltmeter can be enough. If you plan to troubleshoot home, automotive, or DIY electronics more broadly, a multimeter offers more flexibility and can streamline diagnostics.

You can browse voltmeters and multimeters on Walmart.com under Electrical Tools in Additional Electrical Tools, or check in-store availability for your area. To narrow choices online, use filters to focus on:

• Type: Digital multimeter, clamp meter, panel/plug-in voltmeter.
• Features: TRMS, auto-ranging, non-contact voltage (NCV), continuity/diode tests.
• Display and counts: Backlit screens and 4000/6000-count resolution for readability.
• Use case: Home maintenance, automotive, DIY electronics.

You can review product descriptions and customer feedback for details on measurement ranges and accessories. Availability may include shipping, delivery, or store pickup options, depending on location and stock.

TRMS (True RMS) can improve accuracy when measuring AC signals that aren’t perfect sine waves—like those from dimmers, variable-speed tools, or some inverters. For basic outlet and battery checks, standard meters may be adequate, but TRMS can add confidence in more complex situations.

Auto-ranging selects the measurement range for you, which simplifies setup and reduces dial changes. It’s convenient for general troubleshooting and for newer users. Manual range provides more control and can be quicker if you repeatedly measure the same known range.

Consider your projects: everyday home checks favor auto-ranging convenience, while frequent or advanced diagnostics may benefit from TRMS and additional functions like NCV or a clamp meter.