Constant temperature: supports set temperature; the maximum temperature is 99°C, and the minimum temperature must be 5°C higher than the current water temperature It is recommended not to heat the product to 99°C. The power cord of the product will also be unable to dissipate heat in hot water, which will cause aging and damage. Note: The heater voltage is divided into 220V and 110V. The 220V heater power is 2000W, and the plugs are EU plugs, UK plugs, and AU plugs. The 110V heater power is 2000W, and the plug is a US plug Carefully select the voltage and connect it. Under normal circumstances: The voltage in Europe is 220V, and the socket is an EU socket; the voltage in the UK and Singapore is 220V, and the socket is a UK socket; the voltage in Australia and New Zealand is 220V, and the plug is an AU plug; the voltage in the United States, Canada, Mexico, and Japan is 110V, and the plug is a US plug