1. True RMS
2. NCV
3. Auto and manual ranges selectable
4. LPF (low pass filter) function
5. LoZ (low impedance input) function
6. 31-segment analog bar graph
7. Black EBTN screen
8. Diode, duty ratio and continuity buzzer





| Functions | Range | Basic Accuracy |
| UT139S | ||
| 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 | ±(1.0%+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%+5) |
| Frequency (Hz) | 10Hz~10MHz | ±(0.1%+4) |
| Temperature (℃) | -40~1000℃ | ±(1.0%+4) |
| Temperature (℉) | -40~1832℉ | ±(1.5%+5) |
| Features | ||
| Safety rating | CAT III 600V | |
| True RMS | √ | |
| LCD display | EBTN | |
| Display count | 6000 | |
| LPF (ACV) | √ | |
| LoZ (ACV) | √ | |
| Diode | √ | |
| Continuity buzzer | √ | |
| Duty cycle | √ | |
| NCV | √ | |
| Sampling rate | 3 times/s | |
| Analog bar graph | 31 segments | |
| Range selection | √ | |
| Max/Min | √ | |
| Relative mode | √ | |
| Drop proof | 1m | |
| General Characteristics | ||
| Product color | Red and grey | |
| Product net weight | 345g | |
| Product size | 170×80×48mm | |
| Standard individual packing | Gift box, English manual | |
| Standard quantity per carton | 40pcs | |
| Standard carton size | 645×450×340mm | |
| Standard carton gross weight | 23.12kg | |
Notice please: battery no include!

















































