hygger Aquarium Heater Adjustable Triple-Power, Submersible Fish Tank Heater Four Season Power Change, with Digital Controller Abnormal Error Stop Protection for Freshwater Saltwater (400W-800W-1200W)

EXTERNAL CONTROLLER TRIPLE-GUARD: This heater for aquarium with Power Display, allows real-time monitoring of energy consumption and selection of the most suitable heating solution. With Current Temp and Set Temp Display, provides real-time information for comparison, enabling quick identification of anomalies and rapid adjustments

EXTERNAL CONTROLLER BUTTON SETTINGS: Wattage Selection Button, 3 wattage options for each submersible aquarium heater(400W-800W-1200W, 500W-1000W-1500W ). The settings allow you to select 400W or 500W to activate one heating tube, 800W or 1000W to activate two heating tubes, and 1200W or 1500W to activate three heating tubes. Temperature Setting Button, temperature range 59°F~93℉, three-digit display

YEAR-ROUND HEATER: Choose between three power settings to match your needs, this hygger aquarium heater suitable for use in a variety of climates and temperatures. Lowering the power in summer prevents overheating, while increasing the power in winter ensures sufficient heating. The innovative three-tube operate independently design, one tube were to fail, the others continue to operate

UPGRADED VERSION ADJUSTABLE HEATER: Adjustable power aquarium heaters can flexibly adapt to temperature changes in different seasons, especially in climates and homes with significant variations. For example, in warmer seasons or rooms with higher ambient temperatures, lowering the power consumption saves energy. They are also suitable for different sizes of aquariums, or for larger aquariums in future upgrades

HIGH QUALITY & RELIABLE: The premium quartz tube is scientifically and precisely designed, providing stable and reliable operation for many years. It has a sturdy plastic outer casing for protection against impacts. The fish tank water heater suitable for freshwater and saltwater

Dry-Hand Safety Protection: Forgot to refill after evaporation, and tank cleaning. Our hygger aquarium heater has you covered. If accidentally taken out of water or water level drops, it shuts off power to prevent burnout or overheating, while a flashing screen and audible beep get your attention. Simply re-submerge it, goes back to work

STABLE TEMPERATURE CONTROL: The integrated sensor actively monitors the water. The aquarium water heater instantly begins heating when the temperature drops just 1℉ below your set point, the marquee turns red. Once the target temperature is perfectly reached, heating stops and the unit enters a low-power monitoring mode and power displays 0W. This ensures minimal temperature fluctuation and optimal energy efficiency

MEMORY FUNCTION: When power is restored after a power outage, the submersible fish tank heater will maintain its previous temperature setting. Multiple protection, with overheat warning. Low temperature warning. Sensor fault notification. ℉ or ℃ display,press and hold the temp set button for 8 seconds to switch