Sealed (pressure-tested) for supplying individual draw-off points. The hydraulic control system regulates the electrical output automatically, subject to the flow rate. The bare wire heating system is suitable for hard and soft water areas. The automatic flow rate regulation ensures almost constant temperature raising (for application range, see the specification). Installation with pressure taps. G 3/8 threaded water connections exposed. Rapid heat-up. Undersink installation. Power cable for a permanent connection. Device complete with the wall retainer integrated into the back panel.