Features1Multi Purpose: Digital dissolved oxygen meter is suitable for water source detection, aquaculture, sewage treatment, farmland irrigation, laboratory, farm and other places. 2Data Storage: The data of dissolved oxygen meter can be automatically saved and manually saved, the saved data can be exported to an Excel table, and can also be shared with your friends. 3Data Synchronization: Water quality analyzer independent mobile APP, data synchronization, comprehensive functions, worry free and energy saving, easy to operate. 4Highly Sensitive Probe: Smart dissolved oxygen meter uses a highly sensitive probe, accurate measurement data, and detachable. 5Easy to Replace: Dissolved oxygen meter kit probes are easy to replace and come with 6 probe covers for great protection.SpecificationItem Type: Digital Dissolved Oxygen MeterMaterial: ABSBattery: 3 x LR44 Button Batteries (not Included)Dissolution Measurement Range: 0.0 to 30.0mg/LDissolved Oxygen Saturation: 0.0 to 300.0%Temperature: 0.1 to 40.0 DegreeC;32.0 to 104.0 DegreeFDissolved Oxygen Saturation: 0.1%Dissolved Oxygen Saturation: Within Less Than 1.5%F.SStandard Method: Support Single Point or Double Point Automatic Calibration, That Is, 0 or Air Automatic 100% Calibration.Response Time: Less Than or Equal to 45s (90% Response at 20 DegreeC)Automatic Temperature Compensation Range: 0.1 to 50 DegreeCLow Battery Warning: SupportAuto Backlight: SupportPower: Automatic Shutdown for About 8 MinutesOperating Environment: 0.1 to 50.0 DegreeC RH Maximum 90%Weight: Approx. 370g / 13.1ozPackage List1 x Digital Dissolved Oxygen Meter 1 x Electrode 6 x Electrode Tip 1 x Electrode Filler 1 x English User Manual