1、5 IN 1 MULTI FUNCTION: Realize simple and fast test water quality of EC, TDS, SG, salinity and temperature 2、ACCURATE PROBES: Possess high performance and reliability for accurate results and fast measurements 3、WITH BACKLIGHT: LCD digital water quality tester with white backlight, easy to read test data, clear and convenient 4、WIDE RANGE OF USES: Can be used in fishing, aquaculture, laboratory drinking water quality testing, swimming pools, aquariums, etc. 5、SCRATCH RESISTANT ABS: Using excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly 1 x Water Quality Meter1 x User Manual Item Type: Water Quality MeterProduct Size: Approx. 15.5 x 3 x 1.5cm / 6.1 x 1.2 x 0.6inRange: EC: 0-19990us/cm; 0- 199.0ms/cmTDS: 0-9990ppm 0- 199.0pptSalt: 0- 199.9ppt 0%- 20.0%S.G: 1.000- 1.400Temperature: 0℃-50℃ (32℉-122℉)Battery: 1 x 3V CR2032 button battery(not include)Temperature Compensation: 0℃~50℃Working Temperature: 0℃~50℃Wide Range of Uses: Can be used in fishery, aquaculture, laboratory drinking water quality testing, swimming pools, aquariums, etc.Material: ABSWeight: 67 g / 2.4 oz(approx.)