*KeyFeatures *High Precision: Our dissolved oxygen meter features auto temp, manual pressure and salinity compensation, ensuring accurate results in various water conditions. Accuracy: 0.5% F.S for dissolved oxygen/saturation and 32.5F for temperature *Easy-to-Read Display: Measuring Range: Dissolved Oxygen: 0.00-20.00 mg/L, Air Saturation: 0.0-200.0%, Temperature: -42.8 to 114.8F . 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 *50 Sets of Data Storage: The dissolved oxygen tester conveniently stores and recalls multiple measurements. The 13.1 ft waterproof dissolved oxygen electrode extends your measurement range, allowing you to reach deeper waters for accurate readings *Convenient Features: Our pond oxygen meter features low battery warning and auto-shutoff to extend battery life and reduce wear. The tilted back design allows desktop use. Buttons with audio feedback provide a responsive and intuitive user experience ******************************************************************************************************* *Specifications Item Model Number: 9011M Power Supply Voltage: 9V Battery (Dry Cell) Dissolved Oxygen Range: 0.0020.00mg/L Air Saturation Range: 0.0200.0% Temperature Range: -42.8-114.8F / 6.0-46.0 Dissolved Oxygen Accuracy: 0.5% FS Air Saturation Accuracy: 0.5% FS Temperature Accuracy: 32.5F / 0.3C 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: 50 sets Working Environment: 32-122F / 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): 8.2 x 3.1 x 2.2 inch / 208 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 9V Battery (Dry Cell) 1 x Carrying Case 1 x User Manual