Features: 5-in-1 Multifunctional Water Tester: it can test the water quality of EC, TDS, S.G, Salt, and Temperature with simple and quick way. 1.1-inch Display Screen: with backlight for conveniently and easy to read the testing data. Precision Probe: with high performance and high reliability to get an accurate result and rapid measuring. Lightweight & Pocket Size: easy operation digital water quality tester is portable to carry. Wide Applications: it can be used in the field of fishery, aquaculture, laboratory for the water quality testing of drinking water, swimming pool, aquarium, etc. Specifications: Material: ABS Range: EC: 0~19990us/cm, 0-199.0ms/cm TDS: 0~9990ppm, 0~199.0ppt SALT: 0~199.9ppt, 0~20.0% S.G: 1.000~1.400 Temp: 0~50 (32~122) Resolution: EC: 1us/cm(1000us/cm), 0.1ms/cm TDS: 1ppm(1000ppm), 0.1ppt SALT: 1ppm(1000ppm), 0.1ppt, 0.01% S.G: 0.001 Temp: 0.1 (0.2) Accuracy: EC, TDS, SALT: 2%F.S; Temp: 1.0(2.0) Power Supply: 1 * 3V CR2032 button battery (NOT included) Temperature Compensation: 0~50 Operating Temperature: 0~50 Item Size: 155 * 30 * 16mm / 6.10 * 1.18 * 0.63in Item Weight: 41g / 1.47oz Package Weight: 64g / 2.26oz Package Size: 18.5 * 7 * 2cm / 7.28 * 2.76 * 0.79in Packing List: 1 * Digital Tester 1 * Manual (English) M