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10 Best Cheap Multimeters 2025 in the United States
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Buying Guide for the Best Cheap Multimeters
Choosing the right multimeter can be a bit overwhelming, especially if you're new to using one. A multimeter is a versatile tool that measures electrical properties such as voltage, current, and resistance. When selecting a multimeter, it's important to consider your specific needs and the types of tasks you'll be performing. Here are some key specifications to help you make an informed decision.Measurement RangeThe measurement range of a multimeter indicates the maximum and minimum values it can measure for voltage, current, and resistance. This spec is important because it determines the types of electrical systems you can work with. For general household use, a multimeter with a range of up to 600V for voltage, 10A for current, and 20MΩ for resistance is usually sufficient. If you plan to work on automotive or industrial applications, you might need a multimeter with higher ranges. Choose a multimeter with ranges that match the highest values you expect to measure.
AccuracyAccuracy refers to how close the multimeter's readings are to the actual values. This is crucial for tasks that require precise measurements. Accuracy is usually expressed as a percentage of the reading plus a number of digits. For example, ±(0.5%+2) means the reading could be off by 0.5% of the value plus 2 digits. For most DIY and general use, an accuracy of ±1% is acceptable. If you need more precise measurements, look for a multimeter with higher accuracy.
DisplayThe display of a multimeter shows the measurement readings. A clear and easy-to-read display is important for accurate readings. Most multimeters have an LCD display, and some may include a backlight for better visibility in low-light conditions. The number of digits on the display (e.g., 3.5 digits) indicates the resolution. For basic use, a 3.5-digit display is usually sufficient. If you need more detailed readings, consider a multimeter with a higher resolution display.
Auto-Ranging vs. Manual RangingAuto-ranging multimeters automatically select the appropriate range for the measurement, making them easier to use, especially for beginners. Manual ranging multimeters require you to select the range yourself, which can be more time-consuming but offers more control. If you're new to using a multimeter or prefer convenience, an auto-ranging model is a good choice. If you need more control over your measurements, a manual ranging multimeter might be better.
Safety RatingsSafety ratings indicate the level of protection the multimeter provides against electrical hazards. Look for multimeters with a CAT (Category) rating, which defines the environments in which the multimeter can be safely used. CAT I is for low-energy circuits, CAT II for household appliances, CAT III for distribution panels, and CAT IV for high-energy installations like utility connections. Choose a multimeter with a safety rating that matches the types of electrical systems you'll be working with.
Additional FeaturesSome multimeters come with additional features such as continuity testing, diode testing, temperature measurement, and data hold functions. These features can add convenience and versatility to your multimeter. Consider what additional functions you might need based on the tasks you'll be performing. For example, if you frequently work with electronics, a continuity tester and diode checker can be very useful.
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