Swimming SPA pool wate pH ORP Residual Free Chlorine Sensor
Swimming SPA pool wate pH ORP Residual Free Chlorine Sensor PH8012 ph sensor, ORP8083 orp sensor, YLG-2058-01 polargraphic residual chlorine sensor, CL-2059 constant voltage free chlorine senosr, American buyer sepcial need them for swimming pool,and designed BNC connector for ph and orp sensor. Swimming Pool Water and Real time monitoring. pH Sensor with BNC ORP Sensor with BNC Constant voltage type Residual Chorine Sensor Polargraphic Free chlorine Sensor