About This

• Rapid and Safe Heating: The aquarium heater is made of PTC new ceramic semiconductor material and covered with graphene coating that heats the water quickly and safely, and more energy-efficient.
• Precise Temperature Control System: The large LED display shows the set temperature with one decimal place and the temperature control is accurate to 0.5℉. You can set the temperature safely and conveniently using the controller. The adjustable temperature range of fish tank heater is 59℉-94℉.
• Constant Temperature Inverter Technology: If the difference between the actual water temperature and the set temperature is less than 0.5°F, the aquarium heater will heat at a lower power. If the difference between the actual water temperature and the set water temperature is more than 0.6°F, the heater heats at high power, keeping the water temperature constant quickly and accurately and reducing the water temperature difference.
• 2 Automatic Power-off Protection Function: If more than 2 inches of the heater is above the water surface, it stops heating and the overheating protection is automatically activated, and the indicator light flashes to indicate a lack of water. The error message "Er" appears on the display. If the water temperature exceeds 95℉, the indicator light iluminates as an overtemperature alarm, and the error message "EE"is displayed.
• Memory Function & Simple Operation: When the power is restored after a power shutdown, the previous settings will be retained. Press and hold the setting button for 3 seconds to unlock the controller. Press the up and down buttons to adjust the set temperature. If the controller is not operated for 3 seconds. it automatically switches to childproof mode, ensuring the safety of children and fish.