| Model | ST181 | Display | 4000 counts |
| Range | Accuracy | |
| AC voltage | 4V/40V/400V/600V | +-(1.5%+3) |
| DC voltage | 400mV/4V/40V/400V/600V | +-(1.0%+3) |
| Resistance | 400/4k/40k/400k/4M omh | +-(1.2%+3) |
| 40M omh | +-(1.5%+5) | |
| AC current | 40A/400A | +-(2.5%+3) |
| Frequency | 10Hz-400kHz | +-(1.0%+5) |
| 400kHz-4MHz | +-(2.0%+5) | |
| Capacitance | 1nF-4uF | +-(2.5%+10) |
| 4uF-400uF | +-(4.0%+20) | |
| 4mF | +-(5.0%+30) | |
| Working temperature | 18 - 28 degree |