Type: Level monitor meter, Water quality tester, Water quality monitor, Meter digital tester pen, water quality testing meter Description: An ideal tool to keep your pool or spa within safe chlorine and PH areas, no chemicals or guesses. Features: Fast and accurate measurement of PH and chlorine. Recommended PH for swimming pools and spas: 7.2 to 7.8. Recommended chlorine levels for swimming pools and spas: 1.2 to 1.7ppm. Keep the pool or spa in chlorine and PH within the scope of the ideal tool. Easy to carry and easy to maintain without chemical reagents for lightweight Used to routinely monitor PH and chlorine levels in swimming pools, spas and various water sources. Let your swimming pool and spa water security without corrosion. Specifications: Material: Plastic Color: Grey Product Size: Main Machine(LxW): 19 x 2 cm Handle Probe: 15 cm Probe: 4.8 cm Cable: 30 cm Battery: 1 x AA Battery (not include) Package Contents: 1 x Water Quality Tester Set 1 x Sandpaper 1 x Manual Please note: Immersion in water is not recommended except for pool or spa water. Due to manual measurement, there might be a tolerance in the product size.