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UT139 Series True RMS Digital Multimeters

UT139 series are CAT III 600V digital multimeters designed for electricians. Its NCV feature can effectively check electrical status through measuring EM field intensity. The new UT139E/S models include special features such as LoZ (ACV) for measuring‘ghost’ voltage. Its built-in 31-segment analog bar also gives electricians a better visual representation of measurement results. UT139S is built with black EBTN display and it is a perfect meter for working in dark environments.


Models in UT139 series: UT139A, UT139B, UT139C, UT139S

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Features of UT139 Series True RMS Digital Multimeters

Certifications: CE, UKCA, cETLus

● MAX/MIN/REL modes

● Data hold, LED backlight, auto power off
● Full range protection (600V)
● True RMS
● Auto/manual ranges selectable

Specifications of UT139 Series True RMS Digital Multimeters

Specifications Range UT139A UT139B UT139C UT139S
DC voltage (V) 600V ±(0.5%+2) ±(0.5%+2) ±(0.5%+2) ±(0.5%+2)
AC voltage (V) 600V ±(1%+3) ±(0.8%+3) ±(0.8%+3) ±(0.8%+3)
DC current (A) 10A ± (0.7%+2) ±(0.7%+2) ±(0.7%+2) ±(0.7%+2)
AC current (A) 10A ±(1%+3) ±(1%+3) ±(1%+3) ±(1%+3)
Resistance (Ω) 20MΩ ±(1%+2)
40MΩ ±(0.8%+2)
60MΩ ±(0.8%+2) ±(0.8%+2)
Capacitance (F) 99.99mF ±(4%+5) ±(4%+5) ±(4%+5)
Frequency (Hz) 10Hz~10MHz ±(0.1%+4) ±(0.1%+4) ±(0.1%+4)
Temperature (°C) -40°C~1000°C ±(1%+3) ±(1%+4)
Temperature (°F) -40°F~1832°F ±(1.5%+5) ±(1.5%+5)
Display count 2000 4000 6000 6000
Auto range/Manual range
/True RMS
Bandwidth (Hz) 45Hz~400Hz 45Hz~1kHz 45Hz~1kHz 45Hz~400Hz
NCV/Continuity buzzer
Duty cycle 0.1%~99.9%
Diode Around 2V Around 3V Around 3V Around 3V
Analog bar
General Characteristics
Power 1.5V battery (R6) x 2
Display 58mm x 36mm
Product color Red and grey
Product net weight UT139A/B/C: 354g; UT139S: 345g
Product size 170mm x 80mm x 48mm
Standard accessories UT139A/B: Batteries, test leads;
UT139C/S: Batteries, test leads, temperature probe
Standard individual packing Gift box, English manual
Standard quantity per carton 20pcs
Standard carton measurement 450mm x 330mm x 340mm
Standard carton gross weight 12.2kg
Optional accessory UT139C: Current sensor AC/DC 40A

Applications of UT139 Series True RMS Digital Multimeters

UT139S Frequency Measurement
Frequency measurement
UT139S NCV Measurement
NCV measurement
UT139S Resistance Measurement
Resistance measurement
UT139S Voltage Measurement
Voltage measurement

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