Product description Ready-to-Use: With a 5500W high-power and instant hot cast aluminum heater, it can provide you with hot water in a short time without waiting for preheating to meet your family's hot water needs Durable Material: It is made of high-quality ABS and glass material, with a protection grade of IPX4, and its inlet and outlet are made of high-quality brass, which is rust-proof, heat-resistant, and pollution-free, so you can use it with confidence Adjustable Power: It has four power gears: P1, P2, P3, and P4. The intelligent frequency conversion chip will automatically adjust the heating power according to the temperature of the four seasons. Meanwhile, you can choose to set the power yourself High Safety: This tankless mini water heater has many protection functions, such as an anti-leakage protection device, anti-dry burning, water and electricity separation, grounding protection, over-voltage protection, over-temperature protection, and fault self-inspection. These