Uni-T UT139B True RMS Digital Multimeter
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Uni-T UT139B True RMS Digital Multimeter

Item no.: [25567783] | Manufacturer: UNIT | Model no.: UT139B | EAN: 6935750521397
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 38,24
Incl. VAT 47,80
Total incl. delivery 62,80
Read further specifications and description

Uni-T UT139B True RMS digital multimeter

The Uni-T UT139B is a True RMS digital multimeter designed for everyday electrical measurements, combining ease of use with greater reading accuracy. The device operates in CAT III 600V category, offers an NCV function for quickly checking the condition of electrical installations, and features an easy-to-read display supported by a 31-segment analog bar graph. It is an intermediate model in the series that provides a good balance between functionality and precision.

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

Greater precision and ease of measurement

The UT139B 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. Compared to the UT139A model, it offers a higher maximum reading of 4000, while retaining the V.F.C. function and automatic and manual range switching. This makes it better suited for applications requiring greater precision and more convenient result monitoring.

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

Features for enhanced user comfort

The UT139B is equipped with a diode test, continuity buzzer, duty cycle measurement, Data Hold function, Relative mode, Max/Min function, and LCD backlight. The UT139 series also provides full protection up to 600 V, automatic shut-off, and True RMS measurement. It is a practical choice for users who want a more advanced multimeter for service and electrical work.

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

Included

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

Specifications

ManufacturerUni-T
ModelUT139B
Product typeTrue RMS digital multimeter
DC voltage range40 mV / 400 mV / 4 V / 40 V / 400 V / 600 V ±(0.5% + 2)
AC voltage range40 mV / 400 mV / 4 V / 40 V / 400 V / 600 V ±(0.8% + 3)
DC current range400 µA / 4000 µA / 40 mA / 400 mA / 4 A / 10 A ±(1.0% + 2)
AC current range400 µA / 4000 µA / 40 mA / 400 mA / 4 A / 10 A ±(1.2% + 3)
Resistance measurement range400 Ω / 4 kΩ / 40 kΩ / 400 kΩ / 4 MΩ / 40 MΩ ±(1.0% + 2)
Capacitance measurement range9.999 nF – 99.99 mF ±(4.0% + 5)
Frequency range10 Hz – 10 MHz ±(0.1% + 4)
Maximum display reading4000
AC frequency range45 Hz – 400 Hz
Range selectionAutomatic and manual
FunctionsTrue RMS, NCV, diode test, continuity buzzer, duty cycle, Data Hold, Relative mode, Max/Min, 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