Constant Temperature--- Tankless Water Heater using a 4000W fast constant temperature heating system, the water tank free electric water heater provides instant hot water without preheating, and hot water can be obtained in 3 seconds. Instant stable and endless hot water is the perfect companion for the sink, bringing you a comfortable and relaxing experience. It is recommended to use 110V voltage supply so that the water heater can achieve maximum heating power. Safe Zone Design - This water heater adopts an integrated cast aluminum heating design inside, completely separating the electrical system and fluid system to prevent leakage and water pipe corrosion, while greatly improving safety. With powerful features such as dual electric walls, anti dry burning, overvoltage protection, grounding protection, constant temperature and anti scalding, IPX4 waterproof, and over temperature protection, you can rest assured that you can supply safe hot water on demand. Touch Adjustable Switch - The touch screen design of the hot water heater is easy to operate. You can keep it at a certain temperature or adjust the required power according to your own needs. Customizable temperature range from 68 ° F to 131 ° F, achieving energy-saving, continuous heating without the need for repeated cycles. Easy to Install - The internal integrated cast aluminum structure allows electric water heater to be installed without any restrictions. It can be installed 360 degrees in any narrow space, such as bathrooms, kitchens, and sinks. In addition, water heaters with complete electrical and water flow zones can be installed vertically or upside down according to your needs. Standard 1/2 connector (inflow or outflow), can be directly connected to household conventional hose connectors. Save Space & Energy - MHX tankless water heater is designed to be compact, even smaller than a small suitcase. Wall mounted design can greatly save valuable home space while ensuring powerful functionality. The thermal efficiency of a tankless electric water heater is 99%. It only heats water during use, greatly saving energy while completing the heating function. Unlike water tank heaters, it requires energy consumption to maintain water temperature even when not in use.