AQQA Small Aquarium Heater,Submersible Fish Tank Heater Adjustable Temperature,Mini Short Dual-use Fish Heater with LED Digital Display Thermostat,Saltwater Freshwater 250W

Dual Purpose Multifunctional Quartz heater: Use with protective shell with 2 strong suction cups; Single quartz tube body with a tube body suction cup; A protective shell can prevent burns; and not using a protective shell can reduce space occupation

Dual Digital Display External Controller: Displaying real-time water temperature and set temperature simultaneously; Set the temperature to 59 ℉ -94 ℉/15 ℃ -34 ℃; Long press the button for 8s, Fahrenheit and Celsius can be converted to each other

Out of Water Power Off: When the heater leaves the water surface by more than 1.5 inches, automatically loses power, and the digital controller displays error code E1; The error code automatically recovers when heater are submerged in the water

High Temperature Automatic Power Outage: When detecting water temperature above 95 ℉ (35 ℃),automatically stops heating and displays error code HH; When the water temperature is detected to be below 94 ℉, temperature display return to normal

Precautions For Use: Please use it in conjunction with water circulation product for more accurate water temperature detection; Please disassemble and clean the heater tube regularly, recommended 1-2 weeks; Cool for 15 minutes before removing from water