Digital Dissolved Oxygen Meter DO Tester with ATC, 9.84ft DO Probe Cable, Portable Dissolved Oxygen Test Kit for Aquarium, Ponds, Hydroponics, Fish Tank, Brewing, Water Quality, Range 0.0-40.0 mg/L

Portable DO Meter with Dual Display (mg/L & % Modes)：This digital dissolved oxygen meter offers mg/L and % saturation modes for flexible measurement. Ideal dissolved oxygen tester for aquarium, fish tank, ponds, brewing, hydroponics, and water analysis. It accurately detects oxygen content in water (1 mg/L = 1 ppm), helping maintain optimal oxygen levels for aquatic life and fermentation. Suitable for koi ponds, aquaculture, wastewater treatment, and environmental testing.Long Cable Design for Deep Water Testing (9.84ft/3m)：Equipped with a 9.84ft DO probe cable, this dissolved oxygen test kit allows convenient testing in deep tanks, rivers, or outdoor ponds. Perfect for aquaponics or water quality monitoring where distance limits ordinary probes. Lightweight and portable, this DO meter supports field measurements in lakes, streams, and marine ecosystems. Excellent for both professional and home use.Automatic Temperature, Salinity & Altitude Compensation：Featuring ATC (Automatic Temperature Compensation) and manual salinity/altitude calibration, this DO tester ensures stable readings even in fluctuating conditions. Connect via Bluetooth APP to log, store, and export data for long-term monitoring. Adjust for barometric pressure and salinity for precision in saltwater aquariums or marine breeding. Ideal for hydroponic water quality control and aquaculture systems.Easy to Use, Calibrate & Maintain：This dissolved oxygen meter kit includes all accessories—membrane cap, electrolyte, and zero-oxygen water—so you can calibrate directly without extra solutions. Insert the probe, wait a few seconds, and get fast accurate readings. The kit simplifies DO measurement for brewing, wastewater management, and fish farming, with easily replaceable parts for long service life.Professional Design & Reliable Support：The dissolved oxygen meter features a backlit LCD screen, data hold, and temperature switch (°F/°C) for convenient use in dim environments. Great for pond oxygen monitoring or lab testing. Backed by a 365-day warranty and 24-hour customer service for worry-free purchase. A must-have DO meter for aquarium, hydroponics, and brewing applications to ensure healthy, oxygen-rich water.