UNI-T UT139E True RMS Digital Multimeter designed for electricians. Its NCV feature can effectively check electrical status through measuring EM field intensity. The UT139E include special features such as LoZ (ACV) for measuring‘ghost’ voltage. Its built-in 31-segment analog bar also gives electricians a better visual representation of measurement results.
Whether you are troubleshooting industrial machinery, solar power systems, or complex automotive electronics, the UT139E provides the precision and safety features required for high-stakes diagnostics.
True RMS Measurement: Provides accurate readings for non-sinusoidal AC signals, essential for modern electronics and variable speed drives.
LoZ (Low Impedance) Mode: Eliminates "ghost voltages" caused by capacitive coupling in long wire runs, ensuring you only measure actual power.
VFC (Variable Frequency Control): Includes a Low Pass Filter (LPF) to accurately measure voltage and frequency on motor drives and equipment with high electrical noise.
Built for Durability: Features a 2-meter drop-proof housing and a built-in protective holster for use in harsh workshop conditions.
High-Resolution Display: A clear, backlit EBTN display with a 31-segment analog bar graph for quick visual references.
NCV (Non-Contact Voltage): Safely detect live wires without making physical contact.
Temperature Measurement: Includes a K-type thermocouple for testing HVAC systems and engine components.
Max/Min/Relative Modes: Capture peaks and dips in power or set a baseline for comparative testing.
Auto/Manual Ranging: Gives you the speed of auto-ranging with the control of manual selection for specific tests.
Advanced Safety: Fully compliant with CAT III 600V safety standards with built-in fuse protection.
| Function | Range | Accuracy |
| DC Voltage | Up to 600V | ±(0.5%+2) |
| AC Voltage | Up to 600V | ±(0.8%+3) |
| DC Current | Up to 10A | ±(0.7%+2) |
| AC Current | Up to 10A | ±(1.0%+3) |
| Resistance | Up to 60MΩ | ±(0.8%+2) |
| Capacitance | Up to 99.99mF | ±(4.0%+5) |
| Frequency | 10Hz ~ 10MHz | ±(0.1%+4) |
| Temperature | -40°C ~ 1000°C | ±(1.0%+3) |
UNI-T UT139E Digital Multimeter
High-Quality Test Leads (Pair)
K-Type Temperature Probe
User Manual
Protective Holster
