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 anytime. The digital display dissolved oxygen meter uses a mobile app to control the backlight digital display, offering a clearer and more readable interface. 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 and reliable dissolved oxygen testing. Low dissolved oxygen levels can significantly impact aquatic life. When levels drop to 5.0 mg/L, aquatic organisms may struggle to survive. Prolonged exposure to levels between 1–2 mg/L can result in widespread mortality. Therefore, dissolved oxygen 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 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 tolerance is ±1–3 cm.