・Made of superb plastic material,it is long-lasting use ・Clear reading in both day and night for its backlight display design ・5 in 1,PH/EC/TDS/temperature and salinity measurement,one price for multiuse ・IP67 water resistance and operated by built-in cell,mini size and lightweight for better user experience ・Nice for the measuring of drinking water,laboratory,industrial wastewater,aquarium,swimming pool,aquaculture,rice fields,etc. Specifications: ・Material:Plastic ・Power supply:3 * 1.5V 160mAh LR44 Cell (Included) ・Measurement Range: ・TDS:0-1000ppm ・EC:0-10000US/cm ・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 included: ・1 x Water Quality Analyzer ・1 x English User Manual