Hygger Submersible Aquarium Heater with LED Display, Overheating Protection, for Saltwater and Freshwater Tanks up to 240 Gallon

hygger Aquarium Heaters offer accurate temperature control, overheating/low temperature/dry running protection, digital LED display and external temperature controller, efficient and explosion-proof design, and built-in temperature sensor with power-off memory function. Thanks to the intelligent inverter technology, the aquarium heater keeps the water at a constant temperature through the built-in chip, with an accuracy of 0.1F, much more precise than traditional heaters. It has a built-in dual temperature control system in Fahrenheit and Celsius (temperature range: 63-94°F/17-34°C), and you can switch between them by long-pressing the controller's set button for 2-3 seconds.

Our aquarium heater has three intelligent protectors: ①Overheating: When the water temperature exceeds 93°F, the heater displays the error code "HH", and automatically stops heating. ②Dry running: When the heater outs off water, "Auto shut off" will flash and automatically cuts off the power. ③Low temperature: When the temperature is below 59 °F, it will display "LL" and continue heating. Multiple protections to get rid of "boiled fish"!

This aquarium heater features a unique smart LED screen that is completely waterproof and clearly displays the current water temp., set temp., current operating power, error codes, and current operating status. With the red light on, the heater starts heating water. When the light turns white, the heater stops working to maintain the temperature. Simply press the set button on the external controller to set the target temperature.

Our aquarium heater is made of explosion-proof quartz glass and the most thermally stable nickel-chromium wire to transfer heat to the surroundings quickly and steadily. The shell covering the entire heater is made of heat-resistant ABS material, which can protect your aquatic life from burns. Note: Please unplug the power and let the heater cool for 10-20 minutes before taking it out to clean the fish tank or change the water.

The 600W aquarium heater is suitable for fish tanks 60-120 gallons, the 800W aquarium heater is suitable for fish tanks 120-180 gallons, and the 1000W aquarium heater is suitable for fish tanks 180-240 gallons. The final settings are stored in the heater, and if a power outage occurs, the heater will follow the final settings when the power is restored.

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