With a stylish design and advanced safety features, the Aqua 4000si is the perfect shower for modern family bathrooms. The showers feature electronic push button and rotary control for easy operation for all users. TempSure!" Plus technology flushes out residual hot water so that the starting temperature is safe and comfortable for the next user, providing extra safety reassurance. This shower also offers Scalemaster protection to reduce limescale build up on the heating elements, ensuring a longer life and more efficient operation of your shower.