【Product Features】 🌐 Dual RS-485 and Wi-Fi Interface : Monitor remotely or locally via mobile phone anytime, anywhere, without the need for additional meters or apps, making operation simple. 🔄 Automatic Cleaning Function (Optional) : Built-in micro air pump, adjustable cleaning schedule, retains the last reading during self-cleaning, effectively extending maintenance intervals. 🧪 Smart Calibration Function : Easily replace standard liquid bottles, with guided calibration via mobile web interface, convenient for both local and remote calibration. 🤖 AI Intelligence: Alerts for calibration/self-clean status, automatically detects electrode contamination or aging, improving maintenance efficiency. 🌧️ IP68 Integrated Design : Corrosion-resistant materials, suitable for rivers, reservoirs, tap water, wastewater, seawater, etc., no protective casing needed, durable and accurate. 🛠️ Built-In IoT Transmission and Sensors : Fully integrated design, operates immediately once powered, with all functions built-in. ⚡ Ultra-Low Power Consumption : Ideal for large-scale deployment in green energy IoT systems, energy-saving and highly efficient. 📶 High-Strength Isolated Cables : Stable signal, ready for direct use. 🌡️ Temperature Compensation : Ensures measurement accuracy. 🔋 Surge Protection for Power and IoT Communication : Provides extra security. 🌍 Standard Modbus RTU Protocol : Can connect to global IoT systems, widely applicable. 🧠 Smart Design : Stores calibration parameters for easy on-site installation and simple maintenance. 📏 Three-Point Calibration : Calibrate with standard liquid or known concentration samples, ensuring high precision. 🛡️ Calibration and Self-Cleaning Retain Last Reading : Prevents errors while allowing status checks