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 reliable data transmission. The aquarium water testing kit displays clear and easy-to-read measurements, allowing users to save, manage, and share test data conveniently. The digital display dissolved oxygen meter integrates with a mobile app to control the backlight function. 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 powers 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). The device includes automatic temperature compensation for stable and accurate testing. Dissolved oxygen levels are critical for aquatic life. A concentration of 5.0 mg/L may make survival difficult for aquatic organisms. Levels between 1–2 mg/L sustained over several hours can 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 environments, 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 item's actual color and the image shown. Measurement error allowance is +/- 1–3 cm.