SENSORS DRAINAGE SENSOR Example of complete set of drainage probe: Quantity /EC/pH. Signal type S-BUS Sensor for EC and pH measurement of drainage composed of:  Sensor housing prepared for mounting on bracket code 303005011.  EC probe and pH probe  Plastic box with S-BUS interface board. Sensor for measuring drainage quantity composed of:  Drainage quantity measuring probe for installation on the floor or on bracket code 303005011.  Plastic box with S-BUS interface board. Pole support bracket for mounting the drainage quantity probe (code 303005008) and the EC / pH drainage probe (code 303005009)