The UNI-T UT139S delivers professional-grade functionality with enhanced measurement capabilities designed for electrical professionals. With its True RMS accuracy, LoZ ghost voltage detection, and specialized functions like temperature measurement, this reliable multimeter provides electricians, maintenance technicians, and electronics hobbyists with comprehensive functionality for accurate electrical diagnostics in diverse environments.
The UNI-T UT139S expands upon essential multimeter functions with specialized capabilities designed for comprehensive electrical system analysis. With excellent DC voltage accuracy of ±(0.5%+2), True RMS AC measurement with extended bandwidth (45-400Hz), and integrated temperature measurement (-40°C to 1000°C), the UT139S delivers the functionality needed for thorough equipment diagnostics and troubleshooting.
The high-contrast EBTN black display provides clear visibility in varied lighting conditions, especially in dark environments, while the responsive 31-segment analog bar graph provides visual indication of changing values. This combination of digital precision and analog-style visualization makes the UT139S ideal for both precise measurement and dynamic system evaluation.
The UNI-T UT139S includes a dedicated LoZ (Low Impedance) voltage measurement function that allows electricians to quickly verify the presence of actual voltages by eliminating ghost voltage readings. This capability is essential when troubleshooting complex electrical systems, preventing false readings and ensuring accurate diagnostics.
With an extended frequency response of 45-400Hz for both voltage and current measurements, the UT139S provides accurate readings on variable frequency drive systems, allowing technicians to properly evaluate modern electronic equipment. This expanded capability makes the UT139S particularly valuable in environments with electronic controls and variable speed drives.
Electricians rely on the UT139S for comprehensive system evaluation:
Electronics technicians leverage advanced functions for component testing:
HVAC technicians utilize multiple measurement capabilities:
| Measurement | Range | Accuracy |
|---|---|---|
| DC Voltage (V) | 600V | ±(0.5%+2) |
| AC Voltage (V) | 600V | ±(0.8%+3) |
| DC Current (A) | 10A | ±(0.7%+2) |
| AC Current (A) | 10A | ±(1%+3) |
| Resistance (Ω) | 60MΩ | ±(0.8%+2) |
| Capacitance | 99.99mF | ±(4%+5) |
| Frequency | 10Hz~10MHz | ±(0.1%+4) |
| Temperature (°C) | -40°C to 1000°C | ±(1%+4) |
| Temperature (°F) | -40°F to 1832°F | ±(1.5%+5) |
| Duty Cycle | 0.1%~99.9% | ±(1.2%+5) |
UNI-T stands behind the UT139S with comprehensive technical support and one-year warranty. Our dedicated support team is available to assist with application questions, measurement techniques, and warranty service.
The UNI-T UT139S True RMS Digital Multimeter combines essential electrical measurements with specialized functions in a professional package designed for electricians. With true RMS accuracy, temperature measurement, and EBTN display, it delivers reliable performance for professionals who need comprehensive diagnostic capabilities in a wide range of applications.
Order Your UNI-T UT139S Today and Experience Professional Electrical Measurement Capabilities
