Proster T58B Digital Multimeter, 9999 Counts True RMS with NCV

For checking a circuit, testing continuity or measuring temperature, the Proster T58B brings a broad set of functions into one digital multimeter. Its 9999-count display and True RMS readings support everyday electrical testing. Choose automatic ranging for convenience or manual ranging when you want to set the measurement range yourself.

Highlights

The T58B measures AC and DC voltage and current, resistance, capacitance and frequency. It also tests continuity and diodes, measures duty cycle and temperature, and offers non-contact voltage detection (NCV). That range of functions makes it useful for varied checks at home, in a workshop or in technical settings, rather than relying on separate meters for individual tasks.

True RMS measurement is suited to voltage and current readings with non-sinusoidal waveforms. The meter’s 9999-count display gives readings in fine increments, while automatic and manual range selection let you choose between a more hands-off check and direct control. Data hold, a backlit LCD and a flashlight help when taking readings in less convenient positions or lower light. Overload and short-circuit protection are included, with a CAT III 600V safety grade, use the meter and probes within their rated limits.

The supplied set includes test probes, a temperature probe, an alligator clip, a screwdriver, a cloth bag and three AAA batteries, along with the user manual. Buyers have also highlighted the breadth of functions, including capacitance, NCV and low and peak measurements, as useful for home projects.

Best use cases

Use it to investigate an electrical issue by moving from a voltage or current reading to a continuity, resistance or diode check, as appropriate. For example, when checking a cable or connection, continuity testing can help establish whether there is an electrical path, voltage measurement provides a different check when the circuit is energised. NCV offers a non-contact way to check for the presence of AC voltage, while the temperature probe adds a separate option for temperature measurements.

If you mainly need one simple reading, a single-purpose tester may suit that narrower task. The T58B makes more sense when you want several common measurement and test functions in one instrument, with temperature measurement included as well.

Tips for day-to-day use

Select the measurement that matches the check before connecting the probes, and use the temperature probe for temperature readings. Automatic ranging is handy for routine measurements, manual range selection is available when you prefer to choose the range directly. The stand can support the meter during a reading, and its rear magnet can attach it to iron objects, helping keep the display visible while you work. The back also stores the meter’s probes, making them easier to keep with the instrument between tasks.

For electrical measurements, keep the CAT III 600V rating in mind and follow the manual’s instructions for the selected function. The backlight and flashlight are useful additions when the meter is positioned in a dim or awkward spot.

Before you decide

What can the T58B measure? It covers AC/DC voltage and current, resistance, capacitance, frequency, duty cycle and temperature. It also provides continuity, diode and NCV testing.

What does NCV do? Non-contact voltage detection checks for the presence of AC voltage without touching a conductor with a probe. It complements, rather than replaces, measurements made with the test probes.

What comes in the set? The package includes the multimeter, a pair of test probes, a temperature probe, an alligator clip, a screwdriver, a cloth bag, three AAA batteries and a user manual.

Should you buy it?

The Proster T58B is a practical choice for someone who wants one meter for a mix of electrical checks, from voltage and continuity to capacitance and temperature. Its True RMS readings, NCV detection, flexible ranging and useful accessories make it particularly suited to home projects and regular workshop testing.