Real-time Power and Temperature Display: Ultra-high-definition LCD digital display,as clearly visible at night; Display real-time power, real-time accurate water temperature, set temperature, over-temperature alarm code, off-water disconnect code, heating flame animation Intelligent Heating:When the heater detects that the water temperature is lower than the set temperature by 2℉ or 1℃, it will heat up automatically; When it detects that the water temperature reaches the set temperature, it will stop heating Setting Temperature 64°F-95°F/18℃-35℃: Setting by pressing up and down buttons, each press adds or subtracts 1°F/1°C; Long press the down button for 3 seconds to convert the display between Fahrenheit and Celsius Anti-dry Burn and Over-temperature Protection: When the heater leaves the water surface for 1 inch, automatic power off, the controller displays the code E1 as a reminder, and resumes by re-immersing in the water; when the water temperature is detected to be more than 97°F/36°C, it triggers the over-temperature alarm, the controller displays the code OverHeat with a blinking, and the water temperature is lower than 93°F/34°C to return to normal Usage Notes: Always use with water recycling products; Prohibition of burial or use in very dirty fish tanks; It is recommended that the heating rod be disassembled and cleaned in each 1-2 weeks to prevent scale buildup from affecting the heat dissipation AQQA