10 Best Multimeters 2025 in the United States

The Klein Tools MM325 Multimeter is a versatile digital device suitable for various electrical testing tasks. It measures AC/DC voltage up to 600V, 10A DC current, and resistance up to 2MΩ, making it adequate for most residential and light-industrial applications. The multimeter includes continuity, diode, and battery tests, enhancing its utility for everyday use. Notably, the lead-alert protection feature, with LEDs indicating test lead placement, supports safety and accuracy in measurements.

The backlit LCD display improves readability in low-light environments, a practical aspect for users working in dim settings. Additional convenience is offered by test lead holders, a kickstand, and compatibility with a magnetic hanger for hands-free operation, which can be particularly beneficial for prolonged tasks or complex setups.

In terms of build quality, the MM325 is designed to withstand a 6.6-foot drop, indicating robust durability. This feature, along with CAT III/CAT IV safety caps on the test leads, underscores its suitability for controlled environments such as homes and businesses. Given its features and durability, the Klein Tools MM325 is well-suited for DIY enthusiasts and professionals working in standard environments who require a reliable, basic multimeter with clear readings and solid safety features.

The AstroAI Digital Multimeter is a versatile and compact tool adept at measuring AC/DC voltage, DC current, resistance, and diode testing, making it suitable for both household and automotive use. One of its strengths is the sampling speed of 2 times per second, which ensures timely and accurate readings, supported by a well-lit LCD display that is easy to read even in low light conditions. The device also boasts safety features such as double fuse protection, a silicone cover to prevent damage, and an overloading safeguard, enhancing user safety.

It operates with a battery and conveniently includes test leads and a user manual in the package. However, it has some limitations, including its inability to measure AC current and voltages below 100mV, which might restrict its use for certain applications. Additionally, users must ensure correct placement of test leads and rotary switch to obtain accurate readings.

Despite these drawbacks, the compact size and ease of use, including features like data hold and auto shutoff, make it a handy tool for troubleshooting electrical issues. The professional technical support team adds value by offering assistance when needed, which is reassuring for users. The AstroAI Digital Multimeter is reliable for general electrical troubleshooting, though it may not be suitable for more specialized tasks requiring AC current measurements.

The Klein Tools ET600 is a solid choice if you need a reliable multimeter that also tests insulation resistance. It can measure insulation resistance up to 4000 megaohms at multiple voltage levels (125V to 1000V), which is great for thorough electrical inspections. Its auto-ranging TRMS technology helps deliver accurate readings whether you’re measuring AC or DC voltage up to 1000V, resistance, or continuity. This means you won’t have to manually select ranges, making it easier to use especially if you’re not experienced.

The backlit display with a bar graph and helpful icons, such as for high voltage warnings and maximum/minimum values, improves visibility and safety during use. You’ll also appreciate the test and lock buttons which simplify insulation testing, and a low battery indicator that helps avoid unexpected shutdowns. On the downside, the meter is powered by six AA batteries, which might feel bulky and need replacement more often than rechargeable options. While its size and weight are manageable, it may be less convenient for frequent portable use compared to more compact meters.

This multimeter is well suited for electricians or serious DIYers who want a versatile tool capable of handling advanced insulation tests along with regular electrical measurements, but it might be more than needed for casual home use.