Feature 1、Multi Purpose: Digital dissolved oxygen meter is suitable for water source detection, aquaculture, sewage treatment, farmland irrigation, laboratory, farm and other places. 2、Data 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. 3、Data Synchronization: Water quality analyzer independent mobile APP, data synchronization, comprehensive functions, worry free and energy saving, easy to operate. 4、Highly Sensitive Probe: Smart dissolved oxygen meter uses a highly sensitive probe, accurate measurement data, and detachable. 5、Easy to Replace: Dissolved oxygen meter kit probes are easy to replace and come with 6 probe covers for great protection.Item 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°C;32.0 to 104.0°FDissolved 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°C)Automatic Temperature Compensation Range: 0.1 to 50°CLow Battery Warning: SupportAuto Backlight: SupportPower: Automatic Shutdown for About 8 MinutesOperating Environment: 0.1 to 50.0°C RH Maximum 90%Weight: Approx. 370g / 13.1oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xDigital Dissolved Oxygen Meter1 x Electrode6 x Electrode Tip1 x Electrode Filler1 x English User ManualNoteShipped without battery, shipped with liquid.