UNI-T UT139C True RMS Digital Multimeter – 6000 Counts NCV Temperature Tester

UNI-T UT139C True RMS Digital Multimeter | 6000-Count Smart Professional DMM

Versatile True RMS Testing for Electricians, HVAC Service and Field Maintenance in Sri Lanka

The UNI-T UT139C is a professional True RMS digital multimeter featuring 6000-count resolution and smart auto-ranging for reliable electrical diagnostics across residential, commercial and light industrial applications. With 1000V AC/DC voltage, 10A AC/DC current, 60MΩ resistance, 60mF capacitance, 20MHz frequency, temperature measurement and NCV detection, this meter delivers comprehensive testing capability with CAT III 1000V safety rating. Its 3 readings/second response and large backlit LCD make it perfect for electricians working in tight spaces and low-light conditions across Sri Lanka.

The UT139C offers True RMS accuracy for non-linear loads, smart auto/manual ranging, MAX/MIN/REL modes, data hold, flashlight and sound/light alarm functions. The ergonomic design with rubber holster and 318g weight ensures comfortable handling during extended service calls. Ideal for troubleshooting distribution boards, HVAC systems, solar inverters and appliance repairs from Colombo apartments to factory maintenance in Katunayake.

Key Features of UNI-T UT139C Multimeter

6000-Count True RMS Accuracy

High-resolution display with True RMS for accurate measurements on inverters, LED drivers and switching power supplies.

NCV Non-Contact Detection

Sound and light alarms identify live wires safely before probe contact, perfect for initial circuit assessment.

Complete Measurement Suite

1000V AC/DC voltage, 10A AC/DC current, 60MΩ resistance, 60mF capacitance, 20MHz frequency and K-type temperature.

Smart Auto/Manual Ranging

Automatic range selection with manual override for precise control in professional diagnostics.

Backlit Display + Flashlight

Large illuminated LCD and built-in flashlight for clear readings inside DB boards and meter cabinets.

Professional CAT III 1000V Safety

Double insulation and overload protection suitable for mains wiring and light industrial environments.

Common Applications of UT139C in Sri Lanka

Electrical Contractor Work

Verify circuit loads, test insulation resistance and validate wiring installations in residential/commercial projects.

HVAC System Service

Measure compressor currents, control voltages, capacitor values and refrigerant pipe temperatures.

Solar PV Troubleshooting

Check inverter outputs, DC string voltages and AC grid connections in rooftop solar installations.

Appliance Repair Shops

Diagnose power supply faults, motor windings and control board electronics in household appliances.

Technical Specifications of UNI-T UT139C

DC Voltage

600mV~1000V ±(0.5%+2)

AC Voltage (True RMS)

6V~750V ±(1.0%+3)

AC/DC Current

600μA~10A ±(1.0%+2)

Resistance

600Ω~60MΩ ±(0.8%+2)

Capacitance

6nF~60mF ±(3.0%+5)

Temperature

−40°C~1000°C ±(1.0%+3)

Display & Safety

6000-count LCD | 318g | CAT III 1000V

What's in the Box?

1 x UNI-T UT139C True RMS Digital Multimeter

1 x Test Lead Set

1 x K-type Temperature Probe

2 x AAA Batteries (installed)

1 x Protective Holster

1 x User Manual

Downloads

📄 Download UNI-T UT139C Data Sheet
📄 Download UNI-T UT139C User Manual