UNI-T UT136B+ Digital Multimeter: The Ultimate Guide

Overview

The UNI-T UT136B+ is a next-generation, auto-ranging digital multimeter that represents a significant upgrade in UNI-T's popular UT136 series . Designed with an innovative industrial aesthetic, this meter combines robust durability with comprehensive functionality, making it an indispensable tool for electricians, electronics enthusiasts, DIYers, and field service technicians .

Engineered to withstand the rigors of daily use, the UT136B+ features a 2-meter drop-proof design protected by a 3mm thick protective sleeve, ensuring it survives accidental falls that would destroy lesser meters . With safety ratings of CAT II 1000V and CAT III 600V, it delivers professional-grade protection in high-energy electrical environments . The meter also includes valuable features like hFE transistor testing and NCV non-contact voltage detection, adding exceptional versatility for troubleshooting and component testing .

Key Features at a Glance

• Extensive Measurement Range: Measures AC/DC voltage up to 1000V and AC/DC current up to 10A 

• Exceptional Durability: 2-meter drop proof with 3mm protective sleeve—ideal for job site use 

• Fast Sampling Rate: 4 times/second sampling provides quick, accurate readings 

• Large LCD Display: 56.5mm x 36mm screen with backlight for clear visibility in any lighting condition 

• Quick Capacitance Measurement: Measures 1mF in just 4 seconds for efficient capacitor testing 

• Extended Battery Life: Low power consumption design delivers >500 hours of operation 

• Comprehensive Protection: Full-featured mis-test protection withstands up to 1kV voltage shocks 

• Transistor Testing (hFE): Built-in hFE socket for testing transistor current gain 

• NCV Detection: Non-contact voltage sensing for safe live wire identification 

• Safety Certified: CAT II 1000V / CAT III 600V with CE and other international certifications 

Detailed Specifications

The UNI-T UT136B+ delivers professional-grade accuracy across a comprehensive range of electrical parameters.

Electrical Measurement Specifications

Input Impedance: 10MΩ (DCV) 

General Characteristics

Special Functions

Mechanical & Environmental Specifications

What's in the Box

Key Functions & Operation

1. Voltage Measurement (AC/DC)

• Set the rotary switch to the V position

• Press SELECT to choose between AC and DC measurement

• Connect test leads in parallel to the circuit under test

• The 10MΩ input impedance ensures minimal circuit loading 

2. Current Measurement (AC/DC)

• Set the rotary switch to the appropriate μA, mA, or A position based on expected current

• Press SELECT to choose AC or DC

• Connect test leads in series with the circuit

• Always start with the highest range if current value is unknown

3. Resistance & Continuity Testing

• Set the rotary switch to the Ω/continuity/diode position

• Press SELECT to cycle through resistance, continuity, and diode test modes

• For continuity, the buzzer sounds when resistance is <100Ω 

4. Capacitance Measurement

• Set the rotary switch to the capacitance position

• Fully discharge capacitors before testing to avoid damage

• Connect test leads in parallel with the capacitor

• The meter measures large capacitors (1mF) in approximately 4 seconds 

5. Frequency Measurement

• Set the rotary switch to the Hz position

• Connect test leads to the signal source

• Measure frequencies up to 40MHz with ±0.1% accuracy 

6. hFE Transistor Testing

• Set the rotary switch to the hFE position

• Insert the transistor into the dedicated hFE socket, matching the correct pinout (E, B, C)

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

7. NCV (Non-Contact Voltage) Detection

• Set the rotary switch to the NCV position

• Bring the top of the meter near a live conductor or outlet

• The meter provides visual and audible indication when AC voltage is detected, without making physical contact 

Safety Features & Certifications

The UT136B+ incorporates multiple safety features to protect users:

• CAT II 1000V / CAT III 600V Rating: Suitable for measurements on distribution circuits, permanently installed equipment, and high-voltage applications 

• 2-Meter Drop Proof: Withstands accidental falls from workbenches and ladders 

• Overload Protection: Comprehensive mis-test protection withstands up to 1kV voltage shocks 

• Input Warning: Safety-designed inputs prevent incorrect connections

• Double Insulation: Complies with international double insulation requirements

• Low Battery Indication: Alerts user when batteries need replacement to maintain accuracy 

Applications

The UNI-T UT136B+ is an ideal tool for:

⚡ Electrical & Industrial Maintenance

• Troubleshooting control panels and machinery

• Measuring voltage on industrial equipment up to 1000V

• Testing motor windings and contactors

🔧 Electronics Repair & Hobby

• Testing components on circuit boards

• Measuring transistor gain (hFE) for matching pairs

• Checking capacitor values in power supplies

• Diode and continuity testing for PCB troubleshooting

🏠 Residential Electrical Work

• Checking household outlet voltages

• Testing batteries and power adapters

• Identifying live wires with NCV function

• Troubleshooting lighting and appliance circuits

🚗 Automotive Diagnostics

• Testing car battery voltage (12V/24V systems)

• Checking alternator output

• Testing fuses and relays

• Verifying sensor operation

🎓 Educational & Vocational Training

• Ideal for electronics students

• Teaching fundamental measurement techniques

• Safe introduction to electrical measurements

• Affordable option for classroom use

🌡️ HVAC & Refrigeration *(Note: For temperature, consider UT136C+)*

• While UT136B+ does not include temperature, the NCV function helps identify live wiring in HVAC systems

Why Choose the UNI-T UT136B+?

The UT136B+ stands out as a significant upgrade over previous-generation multimeters, addressing the needs of modern users who demand both durability and functionality .

Key Differentiators:

UT136B+ vs. UT136C+

Customer Reviews Summary

Users consistently praise the UT136B+ for:

• Exceptional Build Quality: The rugged construction and protective sleeve inspire confidence 

• Fast & Accurate Readings: The 4x/second sampling rate provides responsive measurements 

• Excellent Value: Comprehensive features at an affordable price point 

• Useful hFE Function: Electronics enthusiasts appreciate the built-in transistor testing 

• Clear Display: Large, backlit screen is readable in various lighting conditions 

Why Upgrade to UT136B+?

If you're still using an older multimeter—particularly earlier UT136 models—the UT136B+ offers compelling reasons to upgrade:

1. Extended Voltage Range: Previous models maxed at 500V; the B+ handles 1000V 

2. Added NCV Function: Non-contact voltage detection enhances safety 

3. Improved Durability: 2-meter drop protection exceeds previous standards 

4. Faster Capacitance: Quick 4-second measurement for large capacitors 

5. Better Safety Ratings: Full CAT II 1000V / CAT III 600V compliance 

Final Verdict

The UNI-T UT136B+ represents an exceptional balance of durability, functionality, and value. Whether you're a professional electrician working in demanding industrial environments, an electronics hobbyist needing transistor testing capability, or a DIYer looking for a reliable home troubleshooting tool, this meter delivers professional-grade performance without breaking the bank .

With its 2-meter drop-proof design, 1000V measurement capability, hFE transistor testing, NCV detection, and >500-hour battery life, the UT136B+ is more than just a basic multimeter—it's a comprehensive testing solution that will serve you reliably for years to come .