| PH range | 0.00~14.00 pH/±600.0 mV |
| PH Measurement Accuracy | ±0.02 pH/±0.5mV |
| PH calibrated mode | Up to three-point automatic calibrate recognition and one custom calibrate, built-in five standard calibrate points 4.01, 6.86, 7.01, 9.18, 10.01 pH |
| ORP Measurement range | ±2000.0mV |
| ORP resolution | 0.1 mV |
| Measurement Accuracy of ORP | ±1.0 mV |
| ORP calibrated mode | Single point custom calibrated (relative mV) |
| Measurement range of dissolved oxygen | 0.0~500.0%; 0.00~50.00 ppm |
| Resolution of dissolved oxygen | 0.1%;0.01 ppm |
| Measurement Accuracy of dissolved oxygen | 0.0-300%: reading +/- 1.5% or +/- 1.0%, whichever is the largest; 300.0-500%: reading +/- 3%; 0.00-30: reading +/- 1.5% or +/- 0.10ppm whichever is the largest; 30.00-50 |
| Dissolved oxygen calibrating mode | Single or double point calibrated Automatic calibration, zero or air automatic 100% calibrated |
| Measurement range of atmospheric pressure | 450.0~850.0 mm Hg;17.72~33.46 in Hg;600.0~1133.2 mbar;8.702~16.436 psi; 0.5921 to 1.1184atm;60.00~113.32 kPa |
| atmospheric pressure resolution | 0.1mm Hg;0.01 in Hg;0.1mbar;0.001 psi;0.0001 am;0.01kPa |
| Measurement Accuracy of atmospheric pressure | ±3 mm Hg @±15℃ |
| Atmospheric pressure calibrated mode | Single point user calibrated |
| Measurement range | -5.00~55.00℃;23.00~131.00℉;268.15 to 328.15K |
| temperature resolution | 0.01℃;0.01℉;0.01K |
| Measurement Accuracy | ±0.15℃;±0.27℉;±0.15K |
| Temperature calibrated mode | Single point user calibrated |
| Temperature temperature compensation | Automatic temperature compensation, -5.00~55.00 ℃, 23.00~131.00 ° F |
| Temperature Data storage | 45000 measurement Data storage, (continuous automatic storage or manual storage) |
| Temperature recording interval | Can be set from 1 second to 3 hours |
| Temperature Interface | USB Interface (HI9 2000-15 data management software recommended) |
| Operating Environment | 0~50℃(32~122 ℉);RH 100% IP67 |
| Battery operated | 1.5V AA battery * 4, about 360 hours of continuous use |
| Weight/Size | 185x93x35.2 mm/400g |
Warranty days: 365 days