| Model | 8401 |
| DO Measuring Range | 0~199.9 (in %) |
| DO Accuracy | ±1.5% F.S (in %) |
| DO Resolution | 0.1% (in %) |
| DO Measuring Range | 0~19.99 (in ppm or mg/l) |
| DO Accuracy | ±1.5% F.S (in ppm or mg/l) |
| DO Resolution | 0.01 (in ppm or mg/l) |
| Temperature Measuring Range | 0~50.0℃ |
| Temperature Accuracy | ±0.3℃ |
| Temperature Resolution | 0.1℃ |
| Coefficient of membrane | Adjustable |
| Memory | N/A |
| IrDA Port | N/A |
| Real Time/Recall | N/A |
| LCD Size | 44(L)*26 (W) mm |
| Operating Temperature | 0~50℃ |
| Operating RH% | Humidity ＜80% |
| Storage Temperature | 0~60℃ |
| Storage RH% | Humidity ＜90% |
| Sensor Life Time | >6 months (with good maintenance) |
| Meter Size | 175(L) * 70(W) * 33(H) mm |
| Weight | ~150g |
| Battery | AAA *4 PCS |
| Standard Package | Meter, Batteries, Dissolve Oxygen (D.O.) Probe (840PAZ), Manual, Carry Case, Electrolyte, Syringe, Membrane, O-ring |
| Optional Accessory | USB Cable & Software |
