LCD screen: An LCD display provides digital data to monitor your filter's performance and help ensure drinking water quality. Lowenergy chip and battery life: An integrated lowenergy smart chip reduces power consumption and extends battery life, enabling convenient and accurate water quality testing. Easy to carry: Compact design for portable use, allowing quick tests wherever you are. Scope of application: Includes a responsive alloy electrode probe for versatile testing in water purifiers, swimming pools, aquaculture, and other fields. Use scenario 1: Home drinking water test after filter replacement to confirm water quality and safety. Use scenario 2: Pool maintenance regularly check pool water to ensure safe and clean conditions. Use scenario 3: Aquaculture monitor water conditions in fish tanks to protect stock and optimize habitats.