heater has a timing function.It can set the time by pressing the SET button.When the time is up, the power will be automatically cut off and an audible alarm will sound.Prevent accidents caused by forgetfulness in occupation.There is no need to next to it during use, is safer and more convenient.Immerse in the at a suitable level and plug into any grounded wall outlet.Then the immersion heater can start working.With a high-quality stainless steel protective cover, the submersible heater will effectively prevent the heating elements from being in direct contact with people or animals and the heat dissipates faster in the by flowing through the holes in the protection.Durable and reusable.The holes on the protection dissipate heat in the faster.2500W can heat 5gallons of water in just a few minutes.To insert the heater, make sure the heater is completely immersed in the water, and then connect the 220V power supply.Simple operation: Immerse the heater in the water level (the heater has a safe water level line).Plug into any grounded wall outlet.Check the power indicator in the socket to make sure the water bucket heater is on, and then the portable heater starts to work.Warning: The power cord and handle cannot be immersed in the water.