Uni-T UT139A True RMS Digital Multimeter
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  1. Electrical Components & Accessories
  2. Tools for electricity
  3. Test & control equipment

Uni-T UT139A True RMS Digital Multimeter

Item no.: [8110754] | Manufacturer: UNIT | Model no.: UT139A | EAN: 6935750511398
Remote stock (5-7 days)
The item is in a remote warehouse, delivery time is 5-7 business days. More info
Delivery options  - Select at checkout
Shipping @price - GLS
12,00
EUR 35,30
Incl. VAT 44,13
Total incl. delivery 59,13
Read further specifications and description

Uni-T UT139A True RMS digital multimeter

The Uni-T UT139A is a True RMS digital multimeter designed for electricians who need a convenient and safe tool for everyday measurements. The device operates in CAT III 600V category, offers an NCV function for quick inspection of the installation, and features an easy-to-read display supported by a 31-segment analog bar graph. This model combines the series’ basic functionality with practical solutions that facilitate field work.

Using the UNI-T digital multimeter to test network parameters in a control cabinet.

Basic measurements with additional features

The UT139A model allows for the measurement of DC and AC voltage up to 600 V, DC and AC current up to 10 A, resistance, capacitance, and frequency, and additionally offers 1.5 V and 9 V battery testing. It stands out from other models with a maximum reading of 2000 and the inclusion of the V.F.C. (low-pass filter) function. Automatic and manual range switching allows you to adapt the operation to a specific measurement and enhances user convenience.

Checking the resistance of components on a green PCB using digital multimeter probes.

Ease of use and safety

The UT139A is equipped with a diode test, continuity buzzer, duty cycle measurement, Data Hold function, Relative mode, and LCD backlight. The UT139 series also offers full protection up to 600 V, automatic shut-off, and a True RMS function that increases measurement accuracy. It is a practical solution for users looking for a reliable multimeter for standard electrical tasks.

Measuring voltage in an electrical switchgear using a digital multimeter and a probe held in a temporary glove.

Included

  • Digital multimeter
  • 2 AA batteries
  • Test leads (1 pair)

Specifications

ManufacturerUni-T
ModelUT139A
Product typeTrue RMS digital multimeter
DC voltage range20 mV / 200 mV / 2 V / 20 V / 200 V / 600 V ±(0.5% + 2)
AC voltage range20 mV / 200 mV / 2 V / 20 V / 200 V / 600 V ±(1.0% + 3)
DC current range200 µA / 2000 µA / 20 mA / 200 mA / 2 A / 10 A ±(1.0% + 2)
AC current range200 µA / 2000 µA / 20 mA / 200 mA / 2 A / 10 A ±(1.2% + 3)
Resistance measurement range200 Ω / 2 kΩ / 20 kΩ / 200 kΩ / 2 MΩ / 20 MΩ ±(1.0% + 2)
Capacitance measurement range9.999 nF – 99.99 mF ±(4.0% + 5)
Frequency range10 Hz – 10 MHz ±(0.1% + 4)
Battery test range1.5 V / 9 V ±(1.0% + 2)
Maximum display reading2000
AC frequency range45 Hz – 400 Hz
Range selectionAutomatic and manual
FunctionsTrue RMS, NCV, diode test, continuity buzzer, duty cycle, Data Hold, Relative mode, LCD backlight, V.F.C.
Measurement categoryCAT III 600 V
Power supply2 × 1.5 V AA batteries
Weight354 g
Dimensions175 × 81 × 48.5 mm
Display dimensions58 × 36 mm
CertificationsCE, UKCA, cETLus