Description 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 data transmission. The aquarium water testing kit displays 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 function. The colorimeter's digital display is clear and easy to read. The dissolved oxygen detection kit allows customization of measurement parameters. The meter automatically powers off after approximately 8 minutes of inactivity and includes 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). The dissolved oxygen meter features automatic temperature compensation for stable and reliable testing. Dissolved oxygen levels are critical for aquatic life. A concentration below 5.0 mg/L can stress aquatic organisms. Prolonged exposure to levels of 1–2 mg/L may result in significant mortality. Accurate 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 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 of the item in the image and the actual product. Measurement error allowance is +/- 1–3 cm.