5 in 1 Multifunctional Digital Water Quality Monitor Tester Portable Pen Type EC S.G Salt Temperature Total Dissolved Solids Detector for Drinking WaterFeature:5-in-1 multi-function water quality tester: It can easily and quickly test the water quality of EC, Total dissolved solids, S.G, salt and temperature.1.1-inch display: with backlight, easy to read test data. Precision probe: high performance, high reliability, accurate and fast measurement. Lightweight and compact: The easy-to-operate digital water quality tester is portable. Wide range of uses: can be used in fisheries, aquaculture, drinking water quality testing laboratories, swimming pools, aquariums and other fields. Specification:Material: ABSScope:EC: 0-19990us/cm, 0-199.0ms/cmTotal dissolved solids: 0-9990ppm, 0-199.0pptSalt: 0-199.9ppt, 0-20.0%S.G: 1.000-1.400Temperature: 0-50℃ (32-122℉)Resolution:EC: 1us/cm (lt; 1000us/cm), 10us/cm (gt; 1000us/cm), 0.1ms/cmTotal dissolved solids: 1ppm (lt; 1000ppm), 10ppm (gt; 1000ppm), 0.1ppmSalt: 1ppm (lt; 1000ppm), 10ppm (gt; 1000ppm), 0.1ppm, 0.01%Temperature: 0.1°C (0.2°F)Accuracy: EC, TDS, Salt: ±2%F.S; Temperature: ±1.0°C (±2.0°F)Power supply: 1 X 3V CR2032 button battery (not included)Temperature compensation: 0-50℃Working temperature: 0-50℃Item size: 155x30x16mm/6.1x1.18x0.63inNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1*Water quality test pen