6-in-1 Multi-Parameter Water Quality Analyser: Simultaneously measures pH, oxidation-reduction potential (ORP), chlorine, electrical conductivity (EC), salinity and temperature, enabling comprehensive water quality analysis 1,000-record data logging and export support: Capable of storing up to 1,000 records, allowing you to track and analyse historical water parameter data over time. Easily monitor water trends for effective maintenance Simple, one-step operation for all users: Simply immerse the electrode in the liquid to instantly synchronise multiple data points with your smartphone; no need to frequently check the device screen Wide range of applications: Ideal for swimming pools, hydroponics, drinking water, aquariums and laboratories, providing accurate real-time readings to meet both everyday and professional testing needs Bluetooth connection procedure: (1) Download the app by scanning the QR code in the user manual; (2) Enable Bluetooth and location permissions for the app on your mobile phone; (3) Switch on the 6-in-1 water quality tester; ensure the Bluetooth icon appears, and it will connect automatically