【Ceramic Aquarium Heater】The heating element of the explosion-proof Aquarium Heater is composed of the explosion-proof quartz glass tubes and high-temperature resistant ceramic heating core for fast, consistent, and more evenly distributed heat. Housed in of V0 grade ABS flame retardant plastic for IP68 waterproof, corrosion resistant, and high-temperature resistance.

【Safety Protection】When the aquarium heater head out of the water, the heater will automatically stop heating, the controller will display the "E1" until the heater is completely submerged in the water. If the water temperature exceeds 34°C/94°F, the fish tank heater will automatically stop heating, and the controller will display the "HH" until the water temperature drops below 34°C/94°F.

【Precise Temperature Control】M2 grade precision water sensor forms an accurate water temperature sensing system. Automatic Constant Temperature Function: Temperature accuracy is ±1°F, when the water temperature is higher than the set temperature, the adjustable aquarium heater will automatically stop heating; when water temperature is lower than the set temperature, the adjustable fish tank heater will restart heating.

【Digital LED Controller】Temperature range: 63-94℉/17-34℃ (long press for 5 seconds to switch between ℉ and ℃). The LED display can show the current water temperature and the set temperature at the same time, the red light on means heating start, and the green light on means constant temperature. The memory function can automatically retain the previous setting when the heater is restarted, no need to set it again.

【Wide Range of Use】The 50W aquarium heater is suitable for 3-15 gallon tanks. Please choose a suitable aquarium heater according to our parameters. This fish tank heater can be widely used in freshwater and saltwater fish tanks, turtle tanks, and aquariums. There are strong suction cups on the heater guard, it's easy to install the aquarium heater not to the tank walls or bottom.