Professional-grade digital simultaneously tracks 7 parameters: pH, , TDS, Salinity, ORP, EC, and Temperature. Ideal for pools, saltwater aquariums, and hot tub maintenance The pool thermometer sensor features a patented optical sensor and integrated flow sensor with timed active detection. This technology provides much more reliable results than a single water sample or test strip reading No more guessing pool chemistry. The digital hot tub water tester provides precise data to optimize chlorine, pH stabilizers, and salt. Reduce chemical waste, save money and extend other equipment lifespan Sync with the free Tuya app to track via smart water monitor. It's time to leave the pool test strips in the past and the pool shop too, your ultimate pool chemical monitor for hassle-free maintenance Quickly test saltwater pool salinity, hot tub pH levels, or aquarium TDS with the smart water monitor's timed test feature. Accurate notification of chlorine, pH or salinity imbalance alerts to protect and equipment Colour:As Shown Material:plastic Package Contents: 1 * wireless tank level monitor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.