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1. Ergonomic design, one-hand comfortable grip & anti-slip & anti-fatigue. 2. More accurate measurement & more sensitive response & more comprehensive functions. 3. Intuitive LCD display with backlight, easy to read values of dissolved oxygen and temperature even in dark or strong light environment. 4. Automatic temperature compensation (ATC), fast response and automatic calibration. 5. It supports recording 99 groups of data manually, convenient to record / compare / view data with one key. 6. Widely applicable to aquaculture, biological reaction, environmental detection, wastewater treatment, laboratory field, medical field, etc. 7. Power supply: 4 x AAA battery (Not included)
