3500W Electric Water Heater, Stainless Steel Automatic Immersion Heater, 220V Electric Water Heater for use in plastic barrels, bath barrels, bathtubs, swimming pools, fish tanks, buckets, and other water-filled containers. Ensure the water level is at least 25–30 cm deep before submerging the heater. The unit is designed to float and can be suspended at the desired depth by adjusting the power cord. If the water level is below 25 cm, ensure the heating element is fully submerged—slight tilting may be used for proper immersion. For inflatable pools or soft-sided containers, place a ceramic tile or non-conductive barrier beneath the heating tube to prevent direct contact with the container surface. Fill the container with water, insert the heater, then plug it in. When powered, the indicator light will illuminate and small bubbles will appear around the heating tube as heating begins. For large volumes of water, unplug the unit halfway through heating to check temperature. Once the desired temperature is reached, unplug the heater, wait 20 seconds, then carefully remove it before using the water. Never operate the heater unless the metal heating tube is fully submerged. Do not use water during heating. Always unplug before contacting water. Human contact with water during operation is strictly prohibited. The stainless steel spherical heating element must be completely submerged during operation to prevent damage. Type: Electric Water Heater Model: Electric Water Heater Power: 3500W Cable Length: 1.5 m Voltage: 220V, 50 Hz Material: Stainless Steel + PP Plastic This immersion heater provides fast, safe heating for bathtubs, buckets, inflatable swimming pools, and similar applications.