The dissolved oxygen meter provides precise and accurate readings, allowing for quick test results. It supports mobile applications, offering real-time Bluetooth data transmission. Measured values are easily visible, enabling users to save, manage, and share data. The meter utilizes a mobile app to control the backlight digital display, enhancing clarity and readability. It allows for customization of parameters and includes an automatic shut-off feature after approximately 8 minutes of inactivity, along with a low battery alarm. Measurement range: dissolved oxygen 0.0-30 mg/L, dissolved oxygen saturation 0.0-300.0%, temperature 0.1-40.0°C (32.0-104.0°F). Automatic temperature compensation ensures more stable dissolved oxygen testing. Levels of dissolved oxygen are critical for aquatic life. A concentration of 5.0 mg/L can hinder survival, while 1-2 mg/L sustained for several hours can lead to mortality. Consequently, oxygen monitors or dissolved oxygen detection kits are essential for aquaculture, biological reactions, and pond management. The kit is suitable for measuring and monitoring oxygen content that impacts reaction rates, process efficiency, or the environment. Applications include aquariums, swimming pools, educational experiments, laboratory settings, scientific research, environmental testing (lakes, streams, oceans), wastewater treatment, and wine production. Color: Black Material: Plastic Package Contents: 1 x Oxygen Meter Note: Light reflection and different displays may cause the item's color in the picture to slightly differ from the actual product. The measurement error is +/- 1-3cm.