| Model | Parameters | WT11 | WT13 |
| Measurement range | 0~100% | ● | ● |
| Size | 135.5mmx62.5mmx22.5mm | ● | ● |
| Wight | 93g(Battery excluded) | ● | ● |
| Resolution | 0.1% | ● | ● |
| Accuracy | ±2% | ● | ● |
| Power supply | 4x1.5V AAA (UM-4) | ● | ● |
| Working flow | <30mA | ● | ● |
| Sample thickness | <9mm | ● | ● |
| Operating Conditions | Temp:0~50℃, Humidity:<90% |
● | ● |
| Test model | Visible light | ● | ● |
| UV | ○ | ● | |
| IR | ○ | ● | |
| Visible light,UV,IR | ○ | ● | |
| Spectrum range | Visible light: 380~760nm |
● | ● |
| IR:940nm | ○ | ● | |
| UV:365nm | ○ | ● |