This tester can help you fully understand the quality of the tested water, so that you can drink or use more at ease. This multifunctional tester can test PH, total dissolved solids, EC, ORP, salinity, SG and temperature for you. If you are interested in this product, come and try it, it will not let you down. Features: 7 in 1 detection function: this tester Multifunctional can test PH, total dissolved solids, EC, ORP, salinity, SG and temperature for you. IP67 waterproof: the waterproof degree IP67 guarantees the normal use of the product inserted into the water in a short time and can effectively avoid dust. Detachable probes design: the probe is detachable and you can change the probes by yourself if it was broken. Wide applications: This product has wide measuring ranges and can measure both fresh water salinity and sea salt. This is a digital water quality monitor for homes, swimming pools, drinking water as well as aquariums. Large LCD Screen: Adopt a large screen LCD to read detection data more clearly. ATC and Data Hold Functions: Automatic temperature compensation function and data hold function can help you obtain more accurate data. Features: Material: plastics Type: (optional) Type1: display without backlight Type2?: display with backlight CE?: Accuracy?: ?2?% MSDS Total dissolved solids: Ranges: 0-10,000?ppm, 1,000?ppm-10,000?ppm, 10.1-200.0?ppt Resolution: 1?ppm, 0.1?ppt Accuracy?: ?2?% FS Salinity: Beaches?: 0.00% to 25.00% Resolution: 0.01?% Accuracy: 0.01-5.00% (0.1%) 5.10-25.00% (1%) pH?: Ranges?: 0.01-14.00?H Resolution?: 0.01?pH Accuracy?: 0.05?pH ORP ranges: 999?mv SG ranges: 1.000-1.222 Operating environment: 0 to 60.0C (32.0 to 140F), 100% relative humidity Total dissolved solids factor: 0.4 ~ 1.0 Temperature ranges: 0.1-60.0?C (32.0-140?F) Temperature accuracy: 0.5C Temperature resolution: 0.1?C/F Power supply: 3 x LR44 batteries (NOT INCLUDED) Package size: 240 * 80 * 50 mm / 9.4 * 3.1 * 2.0 inch Package Weight: 170g / 6.0oz Packing List: 1 * Water Quality Tester (Optional)