Mcbazel Digital TDS Meter & Water Quality Tester 4 in 1 EC, PPM, Temperature (C/F) Monitor with Smart Screen Indicator High Accuracy Hardness Test Kit for Drinking Water, Aquariums, Hydroponics

INSTANT WATER SAFETY ANSWER — Our exclusive emoji quality indicator gives you a happy face for clean water (0–40 ppm) and a sad face when levels are elevated — no charts, no guesswork. Perfect if you just want to know: 'is my water safe to drink?' PROFESSIONAL 4-IN-1 ACCURACY — Measures TDS (0–9990 ppm), EC (electrical conductivity), and temperature in both °C and °F with ±2% laboratory-grade precision. Know exactly when your RO filter or water softener needs replacing before performance drops. SIMPLE ONE-BUTTON OPERATION — Dip, press, read in seconds. Uses standard AAA batteries (included) rather than expensive hard-to-find button cells. Auto-off after 5 minutes keeps batteries lasting longer. BACKLIT DISPLAY WITH HOLD FUNCTION — Read results clearly in any lighting — under the sink, in a dark fish room, or outdoors. Press HOLD to lock the reading on screen and write it down without rushing. TESTS EVERYTHING, GOES ANYWHERE — At only 71.8g, it's light enough for your travel bag or garden shed. Test drinking water, aquariums, hydroponics, pools, spas, and bottled water with a single device. Note：1.Temperature reading cannot be locked. 2.Temperature measurement range: 0-60°C/32-140°F. If the measurement exceeds 60°C, it will only display 59.9°C/139°F. 2.The product is only splash-proof; the main body is not waterproof.