Item Type: PH Water Quality Tester Material: Plastic Recommended CL2 for Swimming Pools and SPA: 1.2 to 1.7 ppm Recommended pH for Swimming Pools and SPA: 7.2 to 7.8 Main Unit Size: Approx. 190x20mm or 7.5x0.8in Handle Probe Length: Approx. 150mm or 5.9in Probe Length: Approx. 48mm or 1.9in Cable Length: Approx. 300mm or 11.8in Power Supply: 1xAA Alkaline Battery (1.5V) (Battery Not Included) 1Accurate measurement, can quickly and accurately measure PH and chlorine, and is used to kill algae and microorganisms. 2Easy to use, portable chlorine and PH water quality detector, compact and easy to use. 3The ideal tool to keep the pool or spa in the normal range of chlorine and pH. 4It is used to routinely monitor the pH value and chlorine level of swimming pools, SPAs and various water sources. 5This electrical measuring instrument can save you time and money, and avoid immersion in water when using it.1 x PH Water Quality Tester(Battery Not Included) 1 x Sandpaper 1 x Manual