Usage Tips: The dissolved oxygen meter provides high-precision and accurate dissolved oxygen readings, enabling quick test results. The Bluetooth-enabled dissolved oxygen meter supports mobile applications for real-time and accurate data transmission. The aquarium water testing kit delivers clear and easily readable measurements, allowing you to save, manage, and share test data at any time. The digital display dissolved oxygen meter uses a mobile app to control the backlight, making the display clearer and easier to read. The dissolved oxygen detection kit allows customization of user-defined parameters. The meter automatically turns off after approximately 8 minutes of inactivity and features a low battery alarm. Measurement range: Dissolved oxygen: 0.030.0 mg/L; Dissolved oxygen saturation: 0.0300.0%; Temperature: 0.140.0C (32.0104.0F). The automatic temperature compensation ensures stable and reliable dissolved oxygen testing. When dissolved oxygen levels fall to 5.0 mg/L, aquatic organisms may struggle to survive. Prolonged exposure to levels of 12 mg/L can result in significant mortality among aquatic life. Therefore, oxygen monitoring or dissolved oxygen detection is essential in aquaculture, biological processes, and pond management. The dissolved oxygen detection kit is suitable for measuring and monitoring oxygen levels in various applications, including aquariums, swimming pools, educational experiments, laboratory sterile environments, scientific research, environmental monitoring (lakes, streams, oceans), wastewater treatment, and wine production. Color: Black Material: Plastic Package Contents: 1 x Oxygen Meter Note: Light reflection and differences in display screens may cause slight variations in the color of the item as seen in images. Measurement error allowance is +/- 13 cm.