Double Safety Protection: According to customer demand, we have upgraded the electric pool heater with built-in thermostat control and fuse. When the water temperature reaches a certain temperature automatically stop heating and maintain the temperature. The fuse can cut off the power to avoid fire, providing you with double safety protection and enjoy a comfortable soak at home. Fast Heating: 1500W high power fast pool electric heater can heat 5 gallons of water in minutes, saving energy and money. The upgraded of the water heater can bring a better experience and enable small children to play freely in a inground swimming pool free from cold water. Anti-scalding&Corrosion Resistance: The swimming pool heater with corrosion resistance stainless steel protective guard can effectively prevent the heating element from directly contacting the human body, both sides are fixed with mechanical and AB glue, which has strong sealing and is safer. Strong corrosion resistance, can be used for a long time, for you to solve the trouble of no hot water. Simple Operation: Pool electric water heater is easy to use, just immerse it completely in water and connect it to a 120V power supply. It consists of copper wires that can carry more electricity, which can quickly transfer heat to water. (Note: Unplug heater before removing from the water.) Widely Use: The heater can be used for ground swimming pool, bucket, washbasin, bathtub, construction, animal husbandry, car washing, etc. The immersion heater is light and small, easy to carry when you go camping. As standby water heater of combined boiler.