Feature:1. The salinity meter has two modes, arbitrarily switching between Celsius and Fahrenheit.2. Not only can it detect the salt content, salt water pool and fish pond, but also the salinity of sea water and salt water pool.3. It can accurately, quickly and reliably test most conventional aqueous solutions.4. 0199.9 PPT measurement index, the test head can be placed in the liquid to be tested.5. Made of highquality ABS material, durable and wearresistant, not easy to damage.Specification:Item Type: Salinity MeterMaterial: ABSWeight: Approx. 147g / 5.2ozUses: widely used in swimming pools, fisheries, drinking water, laboratoriesMeasurement Index: Salinity 0-199.9 PPTBattery Attributes: 4 x 1.5 v (AG-13) (battery not included )How to Use: the test head can be placed in the liquid to be tested (please refer to the manual for details)..Package List:1 x Salinity Meter (Battery Not Included)1 x Screwdriver1 x Manual