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 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 digital screen, offering a clearer and easier-to-read display. 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 alarm 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 automatic temperature compensation ensures stable and reliable dissolved oxygen measurements. When dissolved oxygen levels fall to 5.0 mg/L, aquatic organisms may struggle to survive. Prolonged exposure to levels of 1–2 mg/L can result in significant mortality among aquatic life. Therefore, oxygen monitoring and dissolved oxygen detection kits are essential for aquaculture, biological processes, and pond management. This dissolved oxygen detection kit is suitable for measuring and monitoring oxygen levels that affect reaction rates, process efficiency, or environmental conditions. Applications include 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 of the item in the image and the actual product. Measurement error allowance: ±1–3 cm.