Pahlen recently developed a new series of electric heaters with digital control, where the desired pool temperature can easily be set and the current pool temperature is shown in an LED display. In addition to an overheating protection and a flow switch, the heater has a built-in contactor, that simplifies the connection of the heater. The heating element is made of nickel/iron/chrome alloy or titanium and the casing of the heater is made of glass-fibre-reinforced polypropylene. The electric heaters are supplied with union couplings for bonding to diam. 50 mm pipes.