Function: 1. A reliable water quality testing tool designed to measure pH and chlorine levels in swimming pools, spas, and various water sources. 2. Portable water monitor constructed from high-quality ABS material, offering durability, wear resistance, and corrosion resistance. 3. Features high measurement accuracy and stable performance for quick readings of pH and chlorine values. 4. Helps maintain safe chlorine and pH levels in swimming pools and spa water. 5. Compact design makes it ideal for outdoor use, enabling easy testing of pH and chlorine levels in different water sources. Specification: Material: ABS pH Range: 5.59.0 pH Cl Range: 03.0 ppm Battery: 1 x 1.5V AA Alkaline Battery (battery not included) Usage: Pool Water Quality Tester, pH Test Pen Recommended Chlorine Level for Pools and Spas: 1.21.7 ppm Recommended pH Level for Pools and Spas: 7.27.8 pH Weight: approx. 265g / 9.3oz Product Size: approx. 180 x 125 mm / 7.1 x 4.9 inches Test Lead: approx. 150 x 20 mm / 5.9 x 0.8 inches Package List: 1 x Water Tester (without battery) 1 x Sandpaper 1 x User Manual Note: This device is not intended for submersion in water except when used in swimming pools or spas.