This water quality detector is necessary tool for testing pH and chlorine level for swimming pool and spa. Suitable for aquarium pool, soil-free growing, laboratory and environment water.Features:Widely used to measure the pH / CL2(Chlorine) of solution & water.Multiple indicators to ensure pool & spa water quality.Easy to operate, no more chemicals need.Simple design of one switch to test pH and CL2.With a hole for convenient hanging.Apply in spas, swimming pools, river water, soil-free growing, aquarium, hydroponics and other water systems.Note:1. Any time you use this tester to test the chlorine level, you must adjust it to the "adjustment point" before testing.2. Please must read the user manual carefully before using.Specifications:Color: WhiteMaterial: PlasticRange: pH: 5.5 ～ 9.0pHCL2(Chlorine): 0.2 ～ 3.0Recommended Chlorine Level for Pools and Spas: 1.2 ～ 1.7ppmRecommended pH Level for Pools and Spas: 7.2 ～ 7.8pHPower Supply: 1 * 1.5V AA Battery (Not Included)Item Size: Approx. 180 * 116 * 32mm / 7.1 * 4.6 * 1.3in (Excluding Test Probe)Test Probe Size: Approx. 155 * 20 * 13mm / 6.1 * 0.8 * 0.5in (Including the Handle)Item Weight: Approx. 172g / 6.1ozPackage Size: Approx. 20.5 * 13.7 * 4cm / 8.1 * 5.4 * 1.6inPackage Weight: Approx. 242g / 8.5ozPackage List:1 * Water Quality Tester1 * User Manual3 * Mini Sandpaper