SKU: 40114853912

UNI-T UT139C True RMS Digital Multimeters Circuit Board Fault Testing

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Description

UNI-T UT139C True RMS Digital Multimeters Circuit Board Fault TestingUNI T UT139C True RMS Digital Multimeters, UT139 Series UT139A UT139B UT139C digital multimeters for phone circuit board repair, LCR Meter Handheld Tester Multimetro Ammeter Multitester for phone Diagnostic Repair Tool. UT139 Series: UT139A UT139B UT139C digital multimeters are newly designed to offer users better performance and higher safety rating. Totally over load protection and unique structural design make it new type of multimeter with high

UNI-T UT139C True RMS Digital Multimeters, UT139 Series UT139A / UT139B / UT139C digital multimeters for phone circuit board repair, LCR Meter Handheld Tester Multimetro Ammeter Multitester for phone Diagnostic Repair Tool.

UT139 Series: UT139A / UT139B /UT139C digital multimeters are newly designed to offer users better performance and higher safety rating. Totally over-load protection and unique structural design make it new type of multimeter with high performance/ price ratio and a best choice for electricians used in electrical maintenance and repairing.

Features:
1. True RMS for the whole series;
2. Measure signals with varied frequency (VFC);
3. Measure large capacitance up to 100mF;
4. Optional AC/DC 60A current clamps in different models to measure current up to 60A (1mv=1A);
5. NCV designed for the whole series, a necessity for electricians;
6. AA1.5V*2(5#) battery, easy for users to purchase and replace;
7. Soft rubber holster is easy to stand 2m drop;
8. Optional magnetic hanging strap offered to facilitate tests in special location;
9. Fast to replace fuse, just by opening battery cover;
10. Reliable with use of internal 2PCS fuses with high-breaking capacity;
11. Protection against 600V input/1 minute from mis-connection;
12. Safety Rating: CAT III 600V.

Optional Models:
Option 1: UT139A
Option 2: UT139B
Option 3: UT139C

Specifications Range Best Accuracy
Model   UT139C
DC Voltage (V) 60mV/600mV/6V/60V/600V ±(0.5%+2) 
AC Voltage (V) 60mV/600mV/6V/60V/600V ±(0.8%+3) 
DC Current (A) 600μA/6000μA/60mA/600mA/6A/10A ± (0.7%+2) 
AC Current (A) 600μA/6000μA/60mA/600mA/6A/10A ±(1%+3)
Resistance (Ω) 600Ω/6kΩ/60kΩ/600kΩ/6MΩ/60MΩ ±(0.8%+2) 
Capacitance (F) 9.999nF/99.99nF/999.9nF/9.999μF/99.99μF/
999.9μF/9.999mF/99.99mF
 ±(4.0%+5)
Frequency (Hz) 10Hz-10MHz ±(0.1%+4) 
Temperature (°C) -40 °C~1000°C ±(1.0%+3) 
Temperature (°F) -40°F~1832°F ±(1.5%+5)
Features
Display Count   6000
Auto Range   √  
Manual Range   √  
True RMS   √  
Bandwidth (Hz)   45Hz ~1kHz
V.F.C   √  
Duty Cycle 0.1% ~ 99.9%  √  
Diode   Around 3V
NCV   √  
Auto Power Off Around 15 Minutes √  
Continuity Buzzer   √  
Low Battery Indication ≤2.5V √  
Data Hold   √  
Relative Mode   √  
MAX/MIN   √  
LCD Backlight   √  
Input Protection 600Vrms √  
Input Impedance for DCV 1GΩ Max √  


Applications

    An ideal tool for equipment testing, maintenance and repair widely needed in electronics, electric power, schools, metallurgy, communications, manufacturing, petroleum, national defense, chemical industry, etc.

Specifications Range Best Accuracy
Model   UT139A UT139B UT139C
DC Voltage (V) 20mV/200mV/2V/20V/200V/600V ±(0.5%+2)     
40mV/400mV/4V/40V/400V/600V   ±(0.5%+2)   
60mV/600mV/6V/60V/600V     ±(0.5%+2) 
AC Voltage (V) 20mV/200mV/2V/20V/200V/600V ±(1%+3)     
40mV/400mV/4V/40V/400V/600V   ±(0.8%+3)   
60mV/600mV/6V/60V/600V     ±(0.8%+3) 
DC Current (A) 200μA/2000μA/20mA/200mA/2A/10A ± (0.7%+2)     
400μA/4000μA/40mA/400mA/4A/10A   ± (0.7%+2)   
600μA/6000μA/60mA/600mA/6A/10A     ± (0.7%+2) 
AC Current (A) 200μA/2000μA/20mA/200mA/2A/10A ±(1%+3)     
400μA/4000μA/40mA/400mA/4A/10A   ±(1%+3)   
600μA/6000μA/60mA/600mA/6A/10A     ±(1%+3)
Resistance (Ω) 200Ω/2kΩ/20kΩ/200kΩ/2MΩ/20MΩ ±(1.0%+2)     
400Ω/4kΩ/40kΩ/400kΩ/4MΩ/40MΩ   ±(0.8%+2)   
600Ω/6kΩ/60kΩ/600kΩ/6MΩ/60MΩ     ±(0.8%+2) 
Capacitance (F) 9.999nF/99.99nF/999.9nF/9.999μF/99.99μF/
999.9μF/9.999mF/99.99mF
   ±(4.0%+5)  ±(4.0%+5)
Frequency (Hz) 10Hz-10MHz   ±(0.1%+4)  ±(0.1%+4) 
Temperature (°C) -40 °C~1000°C     ±(1.0%+3) 
Temperature (°F) -40°F~1832°F     ±(1.5%+5)
Features
Display Count   2000 4000 6000
Auto Range   √   √   √  
Manual Range   √   √   √  
True RMS   √   √   √  
Bandwidth (Hz)   45Hz ~400Hz 45Hz ~1kHz 45Hz ~1kHz
V.F.C   √   √   √  
Duty Cycle 0.1% ~ 99.9%    √   √  
Diode   Around 2V Around 3V Around 3V
NCV   √   √   √  
Battery Test 1.5V / 9V √      
Auto Power Off Around 15 Minutes √   √   √  
Continuity Buzzer   √   √   √  
Low Battery Indication ≤2.5V √   √   √  
Data Hold   √   √   √  
Relative Mode   √   √   √  
MAX/MIN   √   √   √  
LCD Backlight   √   √   √  
Input Protection 600Vrms √   √   √  
Input Impedance for DCV 1GΩ Max √   √   √  


Package list:
    
1 * UNI-T UT139C True RMS Digital Multimeters    
2 * Test Leads    
1 * Temperature Probe    

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40114853912

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Sandilou
Waukegan, US
★★★★★ 1
Not worth it for 1/2 oz total liquid and no spray.
Size: 2 Pack Pocket Size
This is a teeny-tiny bottle and it came with no sprayer! Just a screw off lid! Now I have to drive to Kohl's to return it. What a rip-off. There are only two, just 1/4 ounce each. Total deception. Can you tell I'm upset!???
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Reviewed in the United States on April 22, 2026
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A. Johnson
Chelsea, US
★★★★★ 5
Relief
Size: 1 Ounce (Pack of 1)
FINALLY something that gives me some relief, for a while. Its not perfect, but l love rubbing it in my mouth… feels good. I have Sjögrens, so anything l find that works for a while, l am greatful
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Reviewed in the United States on May 10, 2026
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Kathy Crossley
Fort Morgan, US
★★★★★ 5
It works
Size: 1 Ounce (Pack of 1)
Because of cancer, my mouth does not produce saliva at night while I'm sleeping. This product helps a lot, it could have a more spearmint taste, but it works
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Reviewed in the United States on May 12, 2026
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Lynne Zimmerman
Carnegie, US
★★★★★ 1
Mouth BURNING!!!
Size: 1 Ounce (Pack of 2)
Burning sensation??!! I’m sorry I bought this as I’m going to throw it away!!!
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Reviewed in the United States on May 5, 2026
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Gina L Arens
Phoenix, US
★★★★★ 2
Save your money......
Size: 1 Ounce (Pack of 1)
I had high hopes for this, but sadly, it fell short. I have to wear a CPAP mask at night & the dry mouth is just one of the things I hate about it. I saw this, read the reviews & decided to give it a try. I used it per the directions, but it really did nothing to alleviate the dry mouth. I'm giving it 2 stars because it doesn't taste bad, but that's the only good thing I can say about this.
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Reviewed in the United States on February 9, 2026

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