True RMS Accuracy – Provides precise measurements of AC/DC voltage, current, and resistance, even on non-linear loads.
Wide Function Range – Supports frequency, capacitance, temperature, diode, and continuity testing.
Safety Rated – Built with CAT III 600V protection, ensuring safe use in professional and industrial environments.
User-Friendly Display – Large backlit LCD with analog bar graph for clear and quick readings.
Durable & Practical – Robust housing with data hold, auto power-off, and low-battery indicator for reliable daily use.

Uni-T UT139C Digital Multimeter is a highly reliable, auto-ranging digital multimeter designed specifically for electricians and technicians in Uganda. As the premium model in the UT139 series, it offers 6000-count resolution and True RMS technology, ensuring accurate readings on both standard and complex non-sinusoidal waveforms—essential for modern LED lighting and motor drive troubleshooting.
Built with a rugged, drop-proof design and a 100mF capacitance range, the UT139C is a versatile diagnostic tool for industrial maintenance, HVAC, and residential electrical work.
True RMS Measurement: Provides precise AC voltage and current readings, even in electrical environments with significant harmonic noise.
V.F.C (Variable Frequency Control): Features a built-in low-pass filter to accurately measure voltage and frequency in variable speed motor drives.
Non-Contact Voltage (NCV): Integrated sensor identifies live AC lines through walls or insulation, improving safety before you start work.
6000-Count Backlit LCD: High-resolution display with a bright backlight for clear visibility in dark control panels or ceiling voids.
Comprehensive Health Suite: Measures Heart Rate... wait, wrong device! This meter monitors Temperature (-40°C to 1000°C), Capacitance, Frequency, and Duty Cycle.
Ruggedized Protection: Encased in a thick rubber holster and tested to withstand a 2-meter drop. It is rated CAT III 600V for industrial safety.




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Specifications
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Range
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UT139C
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DC voltage (V)
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600V
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±(0.5%+2)
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AC voltage (V)
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600V
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±(0.8%+3)
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DC current (A)
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10A
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±(0.7%+2)
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AC current (A)
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10A
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±(1%+3)
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Resistance (Ω)
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60MΩ
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±(0.8%+2)
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Capacitance (F)
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99.99mF
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±(4%+5)
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Frequency (Hz)
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10Hz~10MHz
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±(0.1%+4)
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Temperature (°C)
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-40°C~1000°C
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±(1%+3)
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Temperature (°F)
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-40°F~1832°F
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±(1.5%+5)
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Features
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Display count
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6000
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Auto range/Manual range
/True RMS |
√
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Bandwidth (Hz)
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45Hz~1kHz
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NCV/Continuity buzzer
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√
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Duty cycle
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0.1%~99.9%
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√
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Diode
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Around 3V
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General Characteristics
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Power
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1.5V battery (R6) x 2
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Display
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58mm x 36mm
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Product color
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Red and grey
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Product net weight
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354g
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Product size
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170mm x 80mm x 48mm
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Standard accessories
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Batteries, test leads, temperature probe
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