氧化还原（ORP）测定，量程：±999mv、标配HI73201氧化还原电极
技术参数：
| Range | mV | ±999 mV |
| Resolution | mV | 1 mV |
| Accuracy | mV | ±5 mV |
| Battery Type / Life | 4 x 1.5V / approx. 700 hours of continuous use | |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% | |
| Dimensions | 175 x 41 x 23 mm (6.9 x 1.6 x 0.9") | |
| Weight | 95 g (3.4 oz.) |
