Smart Sensor AS218 Digital pH Meter, which is a professional-grade electronic device used for measuring the acidity or alkalinity (pH) of liquids and some semi-solid substances. Measurement Range: Typically covers a pH range of 0.00 to 14.00 pH. Key Features: Includes a data hold function, maximum/minimum measurement tracking, and a separate, portable probe for both pH and temperature sensing. Technology: Equipped with Automatic Temperature Compensation (ATC) to ensure accurate readings across varying environmental conditions. Applications: Ideal for water quality testing, including use in laboratories, aquaculture, hydroponics, swimming pools, and aquariums. Package Contents: The kit includes the main meter unit, a pH sensor probe, calibration powder, electrode filling solution, and a 9V battery.