Submersible Aquarium Heater 100W/200W/300W/500W, Fish Tank Heater with high-Temperature Protection and Turtle Tank Heater with Automatic Power-Off When Leaving seawater or Freshwater.

🍀【Premium Safety & Durability】,with advanced intelligent frequency conversion technology,the water temperature constant precision can reach 1℉. The aquarium heater will automatically stop heating when it exceeds the set temperature by 1℉; it will automatically turn on the heating mode when it falls below the set temperature by 1℉.

🍀【Versatile and Efficient Heating】: Ideal as a fish tank heater, turtle tank heater, or submersible heater, this device is suitable for various aquatic environments. With its silicon carbide thermal conductivity capabilities, it provides fast and even heating, ensuring a stable temperature for your fish or turtles. A 100W aquarium heater is ideal for tanks ranging from 10 to 40 gallons.

🍀【Smart Dual Temperature System】: Featuring a dual temperature system, this heater allows you to freely switch between Fahrenheit and Celsius by holding both buttons on the temperature controller for 2-3 seconds. The intuitive design makes it easy to monitor and adjust the temperature, catering to both beginners and experienced aquarists.

🍀【Advanced Safety Features】: Equipped with high-temperature protection, the heater automatically shuts off when the temperature exceeds the set limit by 1 degree, preventing overheating. The waterless power-off function ensures the heater stops working when it is 5 cm above the water surface and restarts when submerged again. Additionally, an alarm will sound during high-temperature protection or waterless power-off, alerting you to potential issues.

🍀【User-friendly design and easy installation】: The heater is equipped with sturdy suction cups on both the heater guard and the temperature controller, making it easy to install on the tank wall or bottom. The LED indicator turns red when heated and green when the set temperature is reached or exceeded, providing clear visual feedback. Its compact and efficient design ensures hassle-free use while keeping your pet on the water safe and comfortable.