ERP is an electronic drive for monophase pumps up to 2,2 kW (1~115-230V) with an innovative system of pressure reduction/regulation for maintaining a constant outlet pressure. In addition to the typical features of traditional electronic pump controllers: integrated check valve, flow sensor, accumulation membrane, pressure gauge, indicator lights, dry-running protection, automatic recovery system (ART), ... it is adjusted and stabilized the output pressure, preventing overloading, which ultimately improves the comfort and durability of the installation.