This device can easily test water quality such as drinking water, aquariums, hydroponic cultivation, pool and more. It is multifunctional and can test PH/EC/TDS/SALT/SG/temperature Moreover, it supports APP remote control, so it is more convenient to monitor anytime, anywhere; Note: Please read the user manual carefully before using Specifications: Color: Gray Material: ABS Range: PH: 0.00-14.000-19000000000000000000000PH/cm. ms/cm TDS: 0-19990ppm, 0-199.0ppt SALT: 0-199.9ppt, 0-20% SG: 0.990-1.400 Temperature: 0-50℃ (32-122℉) Resolution: PH: 0.01PH EC: 1s/cm (<100s/cm) cm (>10 00s/cm, 0.1ms/cm TDS: 1ppm (<1000ppm), 10ppm (>1000ppm), 0.1ppt Salt: 1ppm (<1000ppm), 10ppm (>1000ppm), 0.1ppt, 0.01% SG: 0.001℃ Temperature: 0.1 (0.2 ℉) Temperature Compensation: 0-50℃ APP: Smart compatible App language selection: English, French, German, Russian, Japanese, Korean, Spanish, Chinese, Traditional Chinese (Only support Chinese and English in offline condition)