Usage Tips:3500w Electric Water Heater Stainless Steel Automatic Immersion Heater 220v. Features: First, Plastic Barrels, Bath Barrels, Bathtubs, Swimming Pools, Fish Tanks, Barrels, Buckets and Other Containers Filled with Water. Into the Water Heater, Water Level to Ensure That the Water Heater Suspended in the Water.Water Level in More Than 25 to 30 Cm into the Heater. The Product Will Automatically Float on the Surface, by Adjusting the Power Cord, You Can Let the Heater Suspended in the Right Place. If the Container Water Level is Not Enough 25 Cm, the Product Can Not Be Suspended in the Water, Please Ensure That the Heating Pipe Must Be Submerged in the Water, the Heater Can Be Slightly Tilted a Little Use.If It is Inflatable Swimming Pool or Bathtub and Other Material Containers. For Safety Reasons, You Can Put a Ceramic Under the Heat Pipe to Avoid Direct with the Heat Pipe. The Container is Filled with Water, Put in the Heater Plug the Power Head Waiting for the Heater Indicator Light, the Heat Pipe Around the Distribution of Many Small Bubbles, and Began to Heat.If the Water is Large, Heated to Half of the Need to Unplug the Plug, Try the Next Water Temperature. When the Water Temperature Reaches the Required Temperature, First Unplug the Plug, Wait 20 Seconds to Take out the Heater. You Can Use Water. Specifications: Type: Electric Water Heater Parts Model Number: Electric Water Heaters Power: 3500W Cable Length: 1.5m Voltage: 220V 50HZ Material: Stainless Steel + PP Plastic This Immersion Heater is Quick and Safe. Perfect for Heating in the Bathtub, Bucket, Inflatable Swimming Pool Etc. Note : When Using the Product, the Metal Heating Tube Must Be Completely in Water It is Forbidden to Use Water During Heating. Please Be Sure to Unplug the Plug and then with Water is the Most Secure.