[INSTANT and Endless HOT WATER] Applied with 5.5KW heating system, the electric water heater supplies instant, consistent and endless hot water of 77℉~131 temp℉ shortly, no waiting for preheat nor terrible temp up & down, perfect companion for sinks. Time to get rid of those "lukewarm" toys..[SMART SELF ADJUSTMENT] The electric hot water heater adjusts exact power input based on flow rate and temp setting in real time. For example, less power will be applied by the system when waterflow reduced, thus you still get ideal temperature instead of scalding hot water, which means comfortable experience. Optimal energy efficiency of 98% saves considerable electric charge..[TEMPERATURE SETTING KNOB DESIGN,CONVENIENT USE] The electric tankless water heater 5.5kW comes with digital display, temperature setting knob & indicator light so temp setting is easy job. Best of all, the striking indicator light helps you get full understanding of the working status，you needn’t go through hard lesson of temp setting by a mixer tap without direct information. Now turn on the faucet and let the smart hot water heater do the rest..[SAFE and DURABLE] Newly updated and applied with multiple protection devices, every piece goes through strict tests to ensure 100% safe. Approval by ETL, you can expect outstanding performance for years to come..[POINT OF USE] The sleek electric tankless water heater is compact as an oatmeal box, making it possible to install anywhere close to outlet and avoid energy waste. The unit must only be installed in a vertical position, ideal for kitchen sink, bar, school, hospital, community and hair salon. Please verify it is the right size for you: 5.5kW@240V; dimensions 10.65" x 5.15" x 3.35"; pipes fittings :1/2" NPT.