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 easy-to-read measurements, allowing you to save, manage, and share test data at any time. The digital display dissolved oxygen meter works with a mobile app to control the backlight display. The colorimeter’s digital screen is clear and easy 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 alert. Measurement range: - Dissolved oxygen: 0.0–30.0 mg/L - Dissolved oxygen saturation: 0.0–300.0% - Temperature: 0.1–40.0°C (32.0–104.0°F) Automatic temperature compensation ensures stable and reliable test results. Low dissolved oxygen levels can be harmful to aquatic life. When levels drop to 5.0 mg/L, survival becomes difficult for many aquatic organisms. Prolonged exposure to levels of 1–2 mg/L may result in widespread mortality. Therefore, dissolved oxygen monitoring is essential in aquaculture, biological processes, ponds, and environmental management. This 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 testing (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 between the item’s actual color and the image shown. Measurement error allowance is ±1–3 cm.