Simple, ingenious, ready-to-work measuring and dosing device for pH / Redox (chlorine) in the pool. Tebas-Economic EFka265 is a compact system that is easy to install and use, allowing you to monitor and control the pH and Redox potential levels in the pool. The device includes a digital controller that works according to preset threshold values, two 4 l / h peristaltic pumps, pH and redox electrodes with BNC connector and handles.