UNI-T UT61E+ 22000-Count True RMS Digital Multimeter: The Ultimate Guide

Overview

The UNI-T UT61E+ is a professional-grade, 22000-count true RMS digital multimeter that represents the next generation of the legendary UT61 series . Designed for electronics engineers, technicians, and serious enthusiasts who demand uncompromising precision, this flagship instrument combines exceptional accuracy with comprehensive functionality and modern safety features.

Building upon the renowned reputation of its predecessor (the UT61E), the UT61E+ adds significant upgrades including a backlit LCD display, NCV (Non-Contact Voltage) detection, LPF (Low Pass Filter) for VFD measurements, and USB PC connectivity for data logging and analysis . With its remarkable 22000-count resolution and industry-leading 0.05% DC voltage accuracy, this meter delivers laboratory-grade performance in a rugged, field-ready package.

Engineered with user safety as the highest priority, the UT61E+ is certified to CAT III 1000V and CAT IV 600V safety standards, ensuring reliable operation when working on distribution circuits and permanently installed equipment . Its comprehensive feature set, including ACV+DCV measurement, transistor hFE testing, and 46-segment analog bar graph, makes it an indispensable tool for advanced diagnostics, research, and development applications .

Key Features at a Glance

• Ultra-High 22000-Count True RMS Display: Exceptional 4½-digit resolution with large backlit LCD and 46-segment analog bar graph for precise readings and real-time trend observation . True RMS technology ensures accurate measurement of non-linear or distorted AC waveforms.

• Industry-Leading 0.05% DC Voltage Accuracy: Delivers ±(0.05% + 5) basic DCV accuracy—ideal for calibration work, precision component matching, and critical measurements .

• Wide Measurement Range: Measures DC/AC voltage up to 1000V, DC/AC current up to 20A, resistance up to 220MΩ, capacitance up to 220mF, and frequency up to an exceptional 220MHz .

• Extended AC Bandwidth: 40Hz to 10kHz frequency response for accurate voltage and current measurements on variable frequency drives, motor controls, and audio applications .

• USB PC Connectivity: Built-in USB interface allows connection to a computer for data logging, analysis, and real-time monitoring (USB cable included) .

• LPF (Low Pass Filter) Mode: Built-in low-pass filter for accurate measurements on variable frequency drives (VFDs), inverters, and motor controls with变频干扰 .

• ACV+DCV Measurement: Measures the combined AC and DC components of a signal, crucial for analyzing complex waveforms in modern power electronics .

• High-Frequency Counter: Measures frequencies up to 220MHz with ±(0.01% + 5) accuracy—capabilities typically reserved for dedicated frequency counters .

• Non-Contact Voltage (NCV) Detection: Safely identify live AC circuits with audio and visual alarm .

• Transistor (hFE) Testing: Dedicated multi-purpose socket for testing NPN/PNP transistor current gain—essential for electronics work .

• Peak Hold Function: Captures and displays peak voltage/current transients for analyzing inrush currents and signal spikes .

• Comprehensive Testing: Includes capacitance measurement up to 220mF, duty cycle (0.1%-99.9%), diode test, continuity test with acoustic indication (<50Ω), relative mode, MAX/MIN recording, and data hold .

• User-Friendly Design: Auto and manual ranging, backlit LCD, data hold, relative mode, low battery indication, and auto power-off (approximately 15 minutes) .

• Rugged & Safe: Certified to CAT III 1000V / CAT IV 600V safety standards with full-range overload protection and input impedance ≥10MΩ .

Detailed Specifications

The UNI-T UT61E+ delivers laboratory-grade accuracy across an extensive range of electrical parameters.

Measurement Ranges & Accuracy

General & Mechanical Specifications

What's in the Box

UT61E+ vs. UT61E: Key Upgrades

UT61E+ vs. Other UT61+ Series Models

The UT61+ series offers three distinct models, with the UT61E+ serving as the flagship precision model :

Key Functions & Operation

1. High-Precision Voltage Measurement (0.05% Accuracy)

• Set the rotary switch to the V position .

• The meter features ±(0.05% + 5) basic DCV accuracy, ideal for calibration work and precision component matching .

• Input impedance is ≥10MΩ, minimizing circuit loading effects .

2. LPF (Low Pass Filter) for VFD Measurements

• Activate in AC voltage mode to enable the low-pass filter .

• Blocks high-frequency interference and carrier signals from variable frequency drives .

• Application: Enables accurate voltage and frequency measurements on variable frequency drives (VFDs), inverters, and motor controls .

3. ACV+DCV Measurement

• Measures the total effective voltage of a signal containing both AC and DC components .

• Application: Crucial for analyzing waveforms in power electronics, solar inverters, and other non-linear loads .

4. High-Frequency Measurement (Up to 220MHz)

• Set the rotary switch to the Hz position .

• Measures frequencies up to an exceptional 220MHz with ±(0.01% + 5) accuracy .

• Application: RF signal analysis, oscillator calibration, telecommunications troubleshooting—capabilities typically requiring a separate frequency counter.

5. Capacitance Measurement (Up to 220mF)

• Set the rotary switch to the dedicated capacitance position .

• Fully discharge capacitors before testing to avoid damage .

• Measures up to 220mF (220,000μF) for large motor start capacitors and power supply filtering .

• The 220mF range is one of the highest available in handheld multimeters.

6. NCV (Non-Contact Voltage) Detection

• Set the rotary switch to the NCV position .

• Bring the top of the meter near a live conductor .

• The meter provides audio and visual alarms when AC voltage is detected  .

• Application: Safely verify live circuits before physical contact.

7. USB PC Connectivity

• Connect the included USB cable to your computer for data logging and analysis .

• PC software allows real-time monitoring, data recording, and documentation .

• Ideal for long-term measurements, educational demonstrations, and quality control applications  .

8. Transistor (hFE) Testing

• Set the rotary switch to the hFE position .

• Insert the transistor into the included multi-purpose socket, matching the correct pinout (E, B, C) .

• Read the transistor's DC current gain (β) directly from the display  .

• Application: Essential for electronics work and component matching .

9. Peak Hold Function

• Press PEAK to capture and display peak voltage or current values .

• Application: Analyzing transient signals, inrush currents, and voltage spikes .

10. 46-Segment Analog Bar Graph

• Provides real-time trend observation for fluctuating signals .

• Updates rapidly to show signal variations and trends—faster than the digital display alone .

11. AC/DC Current Measurement (Up to 20A)

• Set the rotary switch to the appropriate current position .

• Connect test leads in series with the circuit under test .

• The UT61E+ supports current measurement up to 20A (compared to 10A on the original UT61E) .

12. Resistance, Continuity & Diode Test

• Set the rotary switch to the **Ω/))) ** position .

• For resistance, connect test leads across the component (up to 220MΩ) .

• For continuity, the buzzer sounds when resistance is <50Ω (≥70Ω no sound)  .

• For diode test, connect leads across the diode to measure forward voltage drop .

13. MAX/MIN, Relative Mode & Data Hold

• Press MAX/MIN to record the highest and lowest readings  .

• Press REL to set a reference value for comparative measurements  .

• Press HOLD to freeze the current reading on the display for convenient viewing .

14. Auto Power Off

• Meter automatically shuts down after approximately 15 minutes of inactivity to conserve battery life  .

Safety Features

The UT61E+ incorporates multiple advanced safety features to protect users:

• CAT III 1000V / CAT IV 600V Rating: Suitable for measurements on distribution circuits and permanently installed equipment—the highest safety ratings in its class  .

• Input Protection: Full-range overload protection on all measurement ranges .

• Input Impedance: ≥10MΩ minimizes circuit loading for accurate readings .

• NCV Detection: Allows safe, non-contact verification of live circuits  .

• Low Battery Indication: Prevents false readings due to insufficient power .

• Audible and Visible Alarms: Provides warnings when measuring high voltage/current and temperature  .

• Fuse Protection: Fuses on current ranges protect against overload .

Applications

The UNI-T UT61E+ is an ideal all-in-one tool for:

🏭 Laboratory & R&D

• Precision component testing with 0.05% DCV accuracy .

• High-frequency signal analysis up to 220MHz for oscillator and RF circuit development .

• Data logging via USB for long-term experiments and documentation .

• Capacitance measurement up to 220mF for power supply design and testing .

⚡ Electronics Engineering & Repair

• Precision circuit design and troubleshooting with 22000-count resolution .

• Component matching with 0.05% accuracy .

• LPF mode for accurate measurements on variable frequency drives .

• Transistor hFE testing for component matching .

• Diode and continuity testing for PCB troubleshooting .

🔧 Industrial Maintenance

• High-voltage measurements up to CAT III 1000V .

• Extended AC bandwidth (10kHz) for variable frequency drive diagnostics .

• Capacitance testing for power factor correction capacitors .

• Peak hold for inrush current analysis .

📡 Telecommunications & RF

• Frequency measurement up to 220MHz for RF signal analysis .

• Oscillator and crystal testing .

• Antenna system troubleshooting .

• Communications equipment maintenance .

🎓 Education & Training

• Ideal for electronics engineering students .

• Teaching precision measurement techniques with 0.05% accuracy .

• PC connectivity for classroom demonstrations and data analysis .

🚗 Automotive Diagnostics

• Testing battery voltage and alternator output (12V/24V systems) .

• Measuring parasitic drain with high resolution .

• Sensor testing with frequency analysis .

Customer Reviews & Real-World Performance

The UT61E+ has earned strong praise from users for its exceptional precision, build quality, and value .

Positive Feedback

• Precision & Accuracy: "It's fairly accurate even on ultra-low resistance measurements, which is hard to find in this price range, and quite a lot in higher ones"  . Users consistently confirm it meets or exceeds specifications .

• Value for Money: "The world class UNI-T Electronic Test Equipment Manufacturer, have just created a masterpiece in the form of UT61E+, the best bang per buck DMM"  . "This little guy far beats its price tag in terms of quality. Why pay $150 or more for randomness when it's easily matched or surpassed?"  .

• Build Quality: "It feels really solid and feels good in the hand"  . "Well made exelent value for money for a 22000 count meter, well within its stated accuracy"  .

• Features: Users appreciate the large clear display, backlight (though some note it's "ok but not it's best selling point")  , USB interface, and comprehensive feature set .

• Performance for Electronics Work: "I'm just a hobbyist but wanted a fast accurate meter with good safety features to replace my aging 20+ year old meter and this is certainly it, it's very very quick on continuity and super accurate"  .

Considerations

• NCV Performance: Some early reviews noted the NCV feature seemed ineffective, but newer units appear improved: "I've seen reviews of this meter saying the NCV is useless but it seems to work absolutely fine on mine"  .

• Backlight: "The backlight is ok but not it's best selling point"  . Some users find it "rather weak" but "completely enough to see the display"  .

• Battery Type: Some users would prefer AA batteries instead of AAA: "I would have preferred 4xAA batteries instead of 4xAAA batteries"  .

• No Temperature Measurement: Unlike the UT61D+, the UT61E+ does not include temperature measurement capability  . A user noted: "the only negative is I just wish they dropped something less useful like Hfe and had temp on the dial and included a temp probe"  .

• Size: "Keep in mind that this device is not a pocket size"  .

Why Choose the UNI-T UT61E+?

UT61E+ vs. Modern Alternatives

Final Verdict

The UNI-T UT61E+ is the definitive choice for professionals who need laboratory-grade precision combined with modern features and advanced diagnostic capabilities in a single, rugged multimeter. Its exceptional 22000-count True RMS accuracy, 0.05% DCV precision, 220MHz frequency counter, and 220mF capacitance range make it exceptionally well-suited for electronics engineers, technicians, and serious enthusiasts.

One reviewer aptly summarized: "The world class UNI-T Electronic Test Equipment Manufacturer, have just created a masterpiece in the form of UT61E+, the best bang per buck DMM"  . Another noted: "This little guy far beats its price tag in terms of quality. Why pay $150 or more for randomness when it's easily matched or surpassed?"  .

The UT61E+ significantly improves upon the legendary original UT61E by adding a backlit display, NCV detection, LPF mode, ACV+DCV measurement, and USB connectivity—while maintaining the high-frequency measurement capability (220MHz) that sets it apart from virtually all competitors in its price range  .

While it lacks temperature measurement (available in the UT61D+) and some users wish for AA batteries, the UT61E+ excels where it matters most: accurate, reliable measurements with professional-grade diagnostic features at an exceptional value .

Whether you're an electronics engineer testing precision circuits, a technician troubleshooting variable frequency drives with LPF mode, an RF specialist analyzing signals up to 220MHz, or a serious hobbyist building and repairing equipment, the UT61E+ delivers professional-grade performance with the safety features you can trust