Fangrui Product Details 3000w Power Can Heat 5 Gallons Of Water In Minutes. Before Inserting The Heater, Make Sure The Heater Is Completely Submerged In The Water, And Then Connect The 220v Power Supply. With A High-quality Stainless Steel Protective Cover, The Submersible Water Heater Effectively Prevents The Heating Elements From Coming Into Direct Contact With People Or Animals And The Heat Is Released To The Water More Quickly By Flowing Through The Holes In The Protection. Durable And Reusable. The Holes On The Protection Dissipate Heat More Quickly Into The Water. Immerse It In Water At A Suitable Water Level And Plug It Into A Grounded Electrical Outlet. Then The Immersion Heater Can Start Working. Our New Submersible Water Heater Has A Timer Function. The Time Can Be Set By Pressing The Set Button. When The Time Is Up, The Power Will Automatically Cut Off And A Beep Will Sound. Prevent Accidents Caused By Forgetting When You Are Busy. There Is No Need To Wait On The Side While Using, Safer And More Convenient. Easy To U