| Optical system | 60° measurement: Incident angle 60°, Reception angle 60°. 20° measurement: Incident angle 20°, Reception angle 20°. |
| Measuring area | 60° measurement 3*6mm oval 20° measurement 3*4mm oval |
| Light source | LED (wavelength: 890 nm) |
| Detector | SPD (silicone photodiode) |
| Measuring range | 0-100 |
| Display range | 0-199 (resolution: 1) |
| Repeatability | ±5% F.S. ±1 digit |
| Power Source | A3 dry cell battery *4 (Not rechargeable) |
| Battery life | 50 hours or more |
| Operating temperature | 10 - 40°C |
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