Carbon Fiber Aquarium Heater 300W/500W

Kaiyopop Carbon Fiber Aquarium Heater Fish Tank Heater 300W/500W: this heater can be used in seawater fish tank environment 30/40/55/75/100 gallon. Large Aquarium Heater Product SpecificationsInput voltage: AC 110-120V/50HzTemperature control range:15~34°CTemperature display range:-9.8~70°CAlarm system: Buzzer & icon flashingAccuracy: 0.1°CPlug cord: 1.5mMain unit connection wire: 1.5mLarge Aquarium Heater Temperature Calibration1. With the power off, press and hold the button on the controller to connect the power supply. After 3 seconds the buzzer will sound once, release the button to enter the temperature calibration mode.2. In the temperature calibration mode, the display will show ten digits and one digit, and the decimal point will flash in a loop for two seconds.3. When the ten-digit and single-digit numbers are flashing, rotate the button to adjust the temperature in 1°C increment. When the decimal point number is blinking, rotate the button to adjust the temperature in 0.