The controller controls the pump speed and thus the output of the pump . The input variables are given by various sensors, such as flow meters and level sensors. Then information triggers the pump controller, which then adjusts the speed of the pump to the optimal. Specifications: Rated Power : 1HP-110/220VAC Max: Overpressure: 7KG/CM Rated current: 10A Starting pressure :1.5bar Maximum pressure: 10bar Connection: G1" male Protection degree: IP 54 Maximum temperature: 52°C Package Includes: 1 x Automatic Pump Control- STA-7 Original Blue Radar