Features: Made ofsuperbp lasticmaterial,itislong-lastinguse. Clear readinginbothdayandnightforitsbacklightdisplaydesign. 5 in 1, PH/ EC/ TDS/temperatureandsalinitymeasurement,onepriceformultiuse. IP67waterresistanceandoperatedby built-incell,minisizeandlightweightforbetteruseexperience. Nice for the measuring of drinking water, laboratory, industrial waste water, aquarium, swimming pool, aquaculture, rice fields, etc. Specifications: Material: P lastic Color: White & Black P owersupply: 3 * 1.5V 160mAh LR44 Cell(NOT Included) Measurement Range: TDS: 0-1000ppm EC: 0-10000US / c m Salt:0.00-25.00 Seawater salinity:10.1-200.0ppt Temperature: 0.1~60.0 (32.0-140.0) Accuracy:0.01-5.00%0.1% 5.01-25.00%1% Backlight: Support Water resistance: IP67 Screen display size:33*24mm Package Size: Approx. 183*37*37mm Package Weight: Approx. 177g Packing List: 1 * Water Quality Analyzer 1 * User Manual (English)