| Model No. | Wavelength | Dynamic Range | Max. Test Range |
| TOT560-A24D | 1310/1550nm | 24/22dB | 80km |
| Measuring range | 100m、500m、2km、5km、10km、20km、40km、80km/90km |
| Sampling resolution | Minimum: 0.2m |
| Event dead zone | < 2.0m |
| Attenuation dead zone | < 7.0m |
| The sampling point | 64,000 point |
| Linearity | ≤0.05dB/dB |
| Loss threshold | 0.01dB |
| Loss resolution | 0.001dB |
| Range resolution | 0.01m |
| Range accuracy | ±(0.5m+Range×3×10-5+Sampling resolution) （Excluding refractive index error） |
| Memory | >40000 |
| Data interface | 2 USB(Type A×1, Micro USB×1, SD card) |
| Screen | 4.3-inch TFT-LCD (Standard distribution capacity touch screen) |
| Battery | 3.7V/5200mAh |
| Temperature | Working temperature：-10℃~+55℃；
Storage temperature：-20℃~+80℃ |
| Humidity | ≤95%（No condensation） |
| Size/Weight | 175x105x45mm / 0.56kg（Contain the battery） |
| OPM | Type A：+10dBm~-70dBm;Type B：+26dBm~-50dBm |
| VFL | 10mW，CW/2Hz |
| LS(Laser Source) | The output power：-5dBm，Modulation frequency：CW/270Hz/1KHz/2KHz |
| Network Cable test | Support network wire sequence testing and wire alignment |
