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) | ||
| Features | |||||
| 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 | |
| LPF/LoZ (ACV) | √ | ||||
| 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 |
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| 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 | ||||
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