Pool Central Battery Operated Chlorine and PH Water Quality Tester for Pool and Spa

Test your pool or spa chlorine and PH levels with ease using this water tester?Easy to read meter replaces complicated color matching systems?Electronically tests the PH and chlorine levels providing instant accurate results?Auto rectification makes it easy to use?Safely measure range chlorine level - 1.2 -1.7 ppm?Safely measure range of PH level - 7.2 - 7.8?Water resistant but not water proof?Keep switch in off position when not in use?Do not immerse probe in any liquid other than pool or spa water?Requires (1) AA battery - not included??Dimensions: 7"H x 4.75"W x 1.25"D?Probe cord extends to 41"?Material(s): plastic/metal