EcoPower 20-Second Controller Unit - OPEN BOXThis EcoPower controller harnesses the energy of running water to power itself. The intuitive Smart Sensor technology accurately detects the user for rapid water disbursement. This 0. 5 gpm controller is operated entirely by self generating hydropower no external power source or wiring is needed. Supplies instant response time and smooth, consistent water distribution when your hands are placed under the faucet spout (not included). Offers a 20 second