Usage Tips: The dissolved oxygen meter provides high-precision and accurate dissolved oxygen readings, delivering fast test results. The Bluetooth-enabled dissolved oxygen meter supports mobile applications for real-time and accurate wireless data transmission. The aquarium water testing kit displays measured values clearly, 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 colorimeters screen clearer and easier to read. The dissolved oxygen detection kit allows customization of user-defined parameters. The meter automatically powers off after approximately 8 minutes of inactivity and includes a low battery warning function. Measurement range: - Dissolved oxygen: 0.030.0 mg/L - Dissolved oxygen saturation: 0.0300.0% - Temperature: 0.140.0C (32.0104.0F) Automatic temperature compensation ensures more stable and reliable dissolved oxygen measurements. Low dissolved oxygen levels can be harmful to aquatic life. Levels below 5.0 mg/L may stress aquatic organisms, and prolonged exposure to levels between 12 mg/L can result in mortality. Therefore, oxygen monitoring is essential in aquaculture, biological processes, and pond management. This dissolved oxygen detection kit is suitable for measuring and monitoring oxygen levels in various applications, including aquariums, swimming pools, educational experiments, laboratory environments, scientific research, environmental monitoring (lakes, streams, oceans), wastewater treatment, and winemaking. Color: Black Material: Plastic Package Contents: 1 x Oxygen Meter Note: Light reflection and differences in display screens may cause slight variations between the product color shown and the actual item. Measurement error allowance is 13 cm.