Features 1、This meter can not only detect the salt content of edible salt, salt water pool and koi fish pond, but also the salinity of seawater, marine, salt water fish tank salt level testing. 2、The multi‑parameter tester can test salinity, TDS, EC and temperature in an accurate, quick and reliable manner for most regular water solutions' testing. 3、IP67 dustproof waterproof water quality tester, temperature measurement, with data hold function for freezing the desired value. 4、High performance, portable human mechanical design, rapid measurement, high stability, good consistency. 5、Compact size, lightweight, built‑in temperature sensor, ATC (auto temperature compensation), intelligent function, high accuracy. Specifications Condition: 100% Brand New Item Type: Water Quality Tester Material: ABS Color: As shown in the picture Weight: Approx.152g/5.4oz Application: Can measure total dissolved solids (TDS), electrical conductivity (EC), salinity, temperature. Battery: 3x1.5V button battery LR44 150MAH (not included) Temperature Range: 0.1-60.0℃ 32.0-140℉ Temperature Accuracy: ±0.5℃ Temperature Resolution: 0.1℃/℉ Working Environment: 0 to 60.0℃ (32.0-140℉), <90% Temperature Compensation: Automatic temperature compensation (ATC) TDS Factor: 0.5 Salinity: Resolution: 0.01%, Accuracy: 0.01-5.00% (±0.1%) 5.10-25.00% (±1%) Package List 1 x Water Quality Tester(Battery Not Included) 1 x Instruction Manual