Usage Tips: The dissolved oxygen meter provides high-precision and accurate dissolved oxygen readings, enabling quick test results. This Bluetooth-enabled dissolved oxygen meter supports mobile applications for real-time and accurate data transmission. The aquarium water testing kit delivers clear, easy-to-read measurements, allowing you to save, manage, and share test data at any time. The digital display dissolved oxygen meter features a mobile app-controlled backlight for improved visibility. The colorimeter’s digital display is clear and easy 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: 0.0–30.0 mg/L; Dissolved oxygen saturation: 0.0–300.0%; Temperature: 0.1–40.0°C (32.0–104.0°F). The device features automatic temperature compensation for more stable dissolved oxygen measurements. Maintaining proper oxygen levels is essential for aquatic life. Dissolved oxygen levels below 5.0 mg/L can stress aquatic organisms, and levels between 1–2 mg/L sustained over several hours may result in significant mortality. Therefore, dissolved oxygen monitoring is critical 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 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 between the color shown in the image and the actual product. Measurement error tolerance is ±1–3 cm.