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Residual Chlorine Sensor: SpiderTrac FR809-Z
Capable of measuring COD, turbidity, and temperature
Equipped with a cleaning brush to prevent biological adhesion
pH Sensor: SpiderTrac P801-Z
Signal output: RS-485 (Modbus/RTU protocol), 4-20mA current output.
Easy installation.
Free Chlorine Sensor: SpiderTrac FR809-W
Continuous online monitoring
Fast response with stable accuracy
Digital pH: SpiderTrac P801-W
The RS-485 output, Modbus protocol compatible
Automatic temperature compensation