
Online Constant Voltage Residual Chlorine Meter with 4-20mA for Pure Water. Lifetime Maintenance Support: Comprehensive lifetime maintenance service included with the product. IP65 Waterproof Protection: NEMA4X / IP65 protection class ensures reliable operation in harsh environments. Multi-Parameter Measurement: Measures Residual Chlorine, HOCL, pH, and Temperature with high precision. Dual Signal Output: Supports 2 channel 4-20mA current output and RS485 Modbus communication. Relay Control Function: 2 sets of relay outputs with configurable High/Low limits and automatic cleaning. Customizable Power Supply: Wide power input range of 100~240VAC, 50/60Hz, customizable for global use. Anti-Interference Design: Super anti-interference design with flame retardant plastic shell for durability. User-Friendly Interface: Large-screen backlit LCD with Chinese/English menu and password protection.