Water ApS electronic ballasts of 50/60 Hz power (equivalent to 115 or 230 volts, respectively) are standard drivers for low-pressure amalgamlamps in water and air purification industry. Electronic ballasts are more efficient than magnetic ballasts. The operation of UV-lamps at higher frequencies reduces end losses, resulting in an overall lamp-ballast system efficiency, increased of up to 20%. Water ApS electronic ballasts can operate with either one or more lamps, therefore the total number of ballasts in the UV reactor is reduced. Water ApS Ballast systems are able to perform with either OxyGuard® Commander systems, RS485, Modbus or other protocols.