Uni-T UT139B True RMS Digital Multimeter

Brand: UNI-T
Product Code: UT139B
Availability: 4-6 business days
Planuojama gavimo data po užsakymo: 2026-05-29

44.10€
Ex Tax: 36.45€

Qty

Add to Wish List

Description Product Delivery

Uni-T UT139B True RMS Digital Multimeter

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

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.

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.

Included

Digital multimeter
AA batteries x2
Test leads x1 pair

Specifications

Manufacturer	Uni-T
Model	UT139B
Type	True RMS digital multimeter
DC voltage	40 mV / 400 mV / 4 V / 40 V / 400 V / 600 V ±(0.5%+2)
AC Voltage	40 mV / 400 mV / 4 V / 40 V / 400 V / 600 V ±(0.8%+3)
DC Current	400 µA / 4000 µA / 40 mA / 400 mA / 4 A / 10 A ±(1.0%+2)
AC Current	400 µA / 4000 µA / 40 mA / 400 mA / 4 A / 10 A ±(1.2%+3)
Resistance	400 Ω / 4 kΩ / 40 kΩ / 400 kΩ / 4 MΩ / 40 MΩ ±(1.0%+2)
Capacitance	9.999 nF ~ 99.99 mF ±(4.0%+5)
Frequency	10 Hz ~ 10 MHz ±(0.1%+4)
Maximum reading	4000
AC frequency range	45 Hz ~ 400 Hz
Range Selection	Automatic and manual
Functions	True RMS, NCV, diode test, continuity buzzer, duty cycle, Data Hold, Relative mode, Max/Min, LCD backlight, V.F.C
Safety	CAT III 600V
Power supply	2x 1.5V AA batteries
Weight	354 g
Dimensions	175 mm x 81 mm x 48.5 mm
Display dimensions	58 mm x 36 mm
Certifications	CE, UKCA, cETLus

Tags: uni-t, ut139b, true, rms, digital, multimeter

Claim orders from Stores

You can claim your purchased items within 1 - 4 work days after making an order (if product is in local warehouse).

Please wait for an email notification regarding Your order status update.

Vilnius Store address: Vytenio g. 20, LT-03229 Vilnius, Lietuva

Kaunas Store address: Pramonės pr. 4D, LT-51329, Kaunas, Lietuva

Local delivery in Lithuania

Purchased items are delivered locally through Venipak service. Depending on availability of items, orders are processed within 1-3 work days. Orders made until 1AM are shipped the same day.

Local delivery (1-4 w.d.) price for items of any size is through through courier service is 4.90€ (incl. VAT), if the amount of the shopping cart exceeds 150€ - delivery is free.

Local delivery price to Venipak parcel terminals (1-3w.d.) is 2.90€ incl. VAT, if the amount of the shopping cart exceeds 50€ - delivery is free.

Local delivery price to Omniva parcel terminals (1-3w.d.) is 3.90€ incl. VAT,if the amount of the shopping cart exceeds 70€ - delivery is free.

Payment on delivery (COD) +2.00€ (incl. VAT).

You can pay for the goods at the time of delivery to the courier in cash or by credit card. Payment to Omniva parcel terminals is only possible by bank card.

A separate delivery fee applies to oversized items, regardless of the amounts and conditions stated above.