... function, high accuracy* Easy to change the pH electrode* Compact size, light weight* Options temperature measurement, or* Power supply ... pools, water conditions* Auto calibration for pH 4.01, pH 7.00 and pH 10.01Specifications SpecificationsParametersMeasurement RangepH0.00 ~ 14.00 ... 0.1 oFNo. of pH Calibration PointsUp to 3 points: pH 4.01, pH 7.00 and pH 10.01Temperature CompensationAutomatic; 0 ...