Stiebel Eltron DHE 18/21/24 Instantaneous Water Heater with Eco Mode for 3-Phase White (20–60°C, 18/21/24 kW). Experience precise, efficient, and intelligent water heating with the Stiebel Eltron DHE 18/21/24 Instantaneous Water Heater. Featuring full electronic control and advanced 4i technology, this model guarantees perfectly accurate water temperatures — no matter how many taps are in use. – Maintains your selected water temperature at all times. – Monitors flow rate, inlet, and outlet temperatures for consistent precision. – Provides sufficient hot water for several draw-off points simultaneously. – Ensures particularly economical operation and energy efficiency. – Backlit multifunction display for easy monitoring and control. – Individual memory buttons store preferred temperature settings. – Wellness shower and automated bath fill functions. – Childproof lock for added peace of mind. – PLEASE NOTE: Refer to the Product Specification Sheet for full details on the suitable applications for this product.