Introducing the 7-in-1 RS485 Water Quality Monitor by Yieryi, your ultimate solution for precise lab and industrial water testing. Measure pH, EC, TDS, ORP, temperature, and humidity with ±0.05pH and ±2% accuracy. Its ergonomic, IP65 design ensures durability and portability, while the RS485 communication supports smart systems. Rechargeable and easy to calibrate, it’s ideal for aquariums, hydroponics, and more. Welcome to visit our website!