Features 1、5 IN 1: EC TDS SALT S.G TEMP water quality tester, the accompanying detailed manual will show you how to get the best accurate and stable reading 2、MOBILE APP BLUETOOTH: Water tester support Bluetooth and APP, APP compatible with for iOS and FOR Android. Switch phone language and region, automatically convert different words on the APP. Full data synchronization display, Bluetooth application data will be synchronized to the APP, full data synchronization more allow you clearly understand the water quality 3、SMALL SIZE MAKES A BIG DIFFERENCE: The lightweight and portable size make it easy to carry the gauge in your pocket and take measurements anywhere. Whether you take your water quality tester to the pool, travel, go to the beach or camping, can help you test the quality of water 4、HIGH ACCURACY ELECTRODE: The water quality meter uses a Ti alloy probe to measure water with high accuracy and ensure accurate measurement values. HD LCD backlight large screen display, bring clear value, easy to read, suitable for all walks of life test needs 5、EASY TO HANDLE IN MANY SITUATIONS: Ideal for home or laboratory use, the water digital quality tester can be used to test drinking water, swimming pools, aquariums, bathtubs, spas Specification Item Type: Bluetooth Water Tester Material: ABS and Ti alloy Battery: 2 x 3V CR2032 button battery(not included) Scope: EC: 0~19900us/cm; 0 ~ 199.0 ms/cm TDS: 0~19900ppm; 0 ~ 199.0 PPT SALT: 0~199.0ppt; 0% - 20% S.G: 0.990~1.400 Temp: 0℃ to 50℃(32℉ to 122℉) Resolution: EC: 1us/cm(< 1999us/cm); 10us/cm(> 1999us/cm); 0.1 ms/cm TDS: 1ppm(< 1999ppm); 10ppm(> 1999ppm); 0.1 PPT SALT: 1ppm(< 1999ppm); 10ppm(> 1999ppm); 0.1 PPT; 0.01% S.G: 0.001% Temp: 0.1℃(0.2℉) Accuracy: EC, TDS, SALT, S.G: ±2%F.S Temp: ±1.0℃ Temperature Compensation: 0℃~50℃ Temperature Range: 0℃~50℃ Package List 1 x Bluetooth Water Tester 1 x User Manual