SAFETY: The heavy-duty stainless steel guard on the barrel water heater contains the heating element to avoid direct contact with people or animals for added safety, and holes in the guard help release heat into the water faster. Dry burning will automatically cut off the power. Constant temperature, automatic shut-off function: Built-in constant temperature control, when the water temperature reaches a certain temperature, the electric water heater will automatically turn on and off to maintain the water temperature, without worrying about overheating. Lie in the bathtub every day, enjoy the comfort of hot water, relieve fatigue and relax your mind. Note: The heater must not be immersed in water when working. Fast Heating: The 2000W high-power water heater can quickly heat up to 5 gallons of water in a few minutes, allowing you to quickly play in a small pool and enhance the bonding of your home. Rapid heating greatly saves your time and electricity. Easy to use: Immersion water heaters are easy to use, simply place the electric heater into the water container and completely cover the hot water with the heating element in the stainless steel protector and plug it into any grounded wall outlet. NOTE:The power cord and black handle must not be immersed in water. Wide range of applications: Submersible water heaters can be used in containers of different sizes, such as small swimming pools, buckets, washbasins, bathtubs, etc. They can also be used to heat water to clean sinks, food, tableware, etc. to avoid contact with cold water.