OWSOO Digital 6 in 1 Multifunction Water Quality Monitor / EC/ / SALT/ S.G/ Portable Testing Meter Analyzer for Drinking Water Aquarium Hydroponics Lab

6 in 1 Multifunction Tester: / EC/ / SALT/ S.G/ , short press the "MODE" button for easy switching. unit switchable: / . Rotate to remove the protective , immerse the electrode into the testing solution. Easy, accurate, fast and to use. Digital screen with backlight, greatly enhances reading experience, 3 LR44 batteries powered (not included), auto shutdown to save power. The instrument has memory function, if you power it on, it will enter the last test mode before sh