Handheld digital multimeters are popular in the electronic measurement field for their portability and versatility. Here are their key advantages:

The compact and lightweight design makes them ideal for field testing and mobile work, easily fitting in a tool bag or pocket.

• Resolution ranges from 3.5 to 4.5 digits, with DC voltage accuracy up to 0.09% (such as the U1242B).
• They support measurement of various parameters, including voltage, current, resistance, capacitance, frequency, and temperature, and some models also include harmonic analysis.
• High-end models, such as the Keysight U1250 series, offer 0.025% DCV accuracy and a built-in frequency counter.

• They meet CAT III 1000V/CAT IV 600V overvoltage protection standards and feature a drop-resistant molded housing.
• Equipped with a high-energy fuse and arc-proof probes, they ensure safe operation in high-current environments.

• Supports True RMS (true effective value) measurement, automatic range switching, data hold, and a backlit display.
• Automated testing and data logging can be achieved through software such as BenchVue.

Compared to benchtop multimeters, handheld models are less expensive and feature built-in battery operation, making them suitable for users on a budget.

• Quickly detect power harmonics or switching system glitches.
• Select models, such as the UA9988, integrate non-contact voltage detection (NCV) to improve home repair efficiency.