| Specifications | Range | Best Accuracy |
| Model | | UT18B |
| LED AC/DC Voltage Indication (V) | 12V | 8V±2V |
| 24V | 18V±2V |
| 50V | 38V±4V |
| 120V | 92V±6V |
| 230V | 174V±8V |
| 400V | 320V±10V |
| 690V | 550V±15V |
| Phase Rotation Test | Operating Voltage: 100V~690V | √ |
| Frequency：50Hz~ 60Hz |
| Single Lead(L2)Voltage Detection | Operating Voltage：100V~690V | √ |
| Frequency: 50Hz~ 400Hz |
| Continuity Test | Resistance: 0~100KΩ | √ |
| Beeper and LED light Indicator |
| RCD Test | Operating Voltage：230V(50Hz～400Hz) | √ |
| Polarity Detection | Positive & Negative | √ |
| self-inspection | All LED or LCD indicator | √ |
| No power Test | Operating Voltage: 50VAC/120VDC~690VDC/AC | √ |
| Features |
| IP65 | | √ |
| Auto Range | All Range | √ |
| Work Light | All Range | √ |
| Low Battery Indication | Voltage Range：2.2V～2.4V | √ |
| Exceed Voltage | Voltage Range：713V～788V | √ |
| Auto standby | standby current <10uA | √ |
| Silent mode | All Range | √ |
| General Characteristic |
| Power | 1.5V Batteries（R03）× 2 |
| Product Color | Red |
| Product Net Weight | 260g |
| Product Size | 272mm×85mm×31mm |
| Standard Accessories | Batteries |
| Standard Individual Packing | Blister, English Manual |
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