*KeyFeatures *Bluetooth / USB Data Transfer: Connect via Wi-Fi to our app for real-time water quality monitoring on your mobile, or use USB for data transfer. Our dissolved oxygen meter is ideal for field checks and lab reports, saving you time on data management *High Precision: Our dissolved oxygen tester features auto temp, manual pressure and salinity compensation, ensuring accurate results in various water conditions. Max Accuracy: ±2% for dissolved oxygen/air saturation and ±32.5°F for temperature *Easy-to-Read Display: Measuring Range: Dissolved Oxygen: 0.00-50.00 mg/L, Air Saturation: 0.0-500.0%, Temperature: -42.8 to 114.8°F . This DO meter provides a clear and glare-free display for easy data reading, even in bright sunlight *IP67 Waterproof: The dissolved oxygen test kit withstands splashes and accidental submersion. The stable structure ensures reliable operation in humid environments, making it ideal for fieldwork and lab water applications *Convenient Features: Our pond oxygen meter stores up to 750 data sets with easy recall. Low battery alert and auto-shutoff extend battery life. The tilted back design allows desktop use. Audio-feedback buttons ensure a responsive intuitive experience ******************************************************************************************************* *Specifications Item Model Number: 9011B Battery Capacity: 750mAh Number of Cells: 2 Dissolved Oxygen Range: 0.00–50.00mg/L Air Saturation Range: 0.0–500.0% Temperature Range: -42.8-114.8°F / 6.0-46.0℃ Temperature Accuracy: ±32.5°F / 0.3°C Pressure Compensation: 600 to 1100 hPa adjustable, default 1013 hPa Salinity Compensation: 0.0 to 40.0g/L adjustable, default 0.0g/L Measurement Data Storage: 750 sets Data Transfer: USB, Bluetooth Working Environment: 32–122°F / 0–50℃, Relative Humidity < 90% Product Color: Black Main Unit Shell Material: ABS Electrode Material: Stainless Steel Product Net Weight: 4.1 lbs / 1.85 kg (Including Accessories + Toolbox) Main Unit Dimensions(L x W x H): 8.5 x 3.1 x 2.2 inch / 217 x 80 x 55 mm Toolbox Dimensions(L x W x H): 13.8 x 3.5 x 10.8 inch / 350 x 90 x 275 mm ******************************************************************************************************* *Pakcage Content 1 x Main Unit 1 x 9011P Electrode (4m Cable) 1 x LD-900-4A Electrode Membrane Set 1 x USB Charging Cable 1 x Carrying Case 1 x User Manual