Product Information:Type: Portable Water Quality AnalyzerSupply voltage: 1.5Measuring range: 7.2-7.8Test Items: pH, ChlorineMeasurement Accuracy: 0.1Applicable scene: swimming poolPacking List:1 * Water Quality Detector Healthy Protection: It is a handy tool to test water PH and chlorine level, can easily and quickly check the current PH level and chloride level of your water. Easy to read: Large display, 2 in 1, Convenient and cheap. Setting Accuracy: Before you use this tool for the first time, you need to find the tester's matching point (Can refer to the description). Applications: Ideal pH and chlorine meter for aquariums, fishing, pools, swimming pools, school laboratories, running water, aquaculture, etc. Measuring range: pH value measuring range 7.2-7.8; Chlorine content measuring range 1.2-1.7ppm