hygger Aquarium Heater, Digital Display Mini Submersible Fish Tank Heater(100W),Fast Heating Thermostat with External Controller and Built-in Thermometer Heater for 25-50L Small Fish Tank

1)This aquarium heater diving heater has the memory function when power failure, and automatically closes when there is no water, so it is safe to use. Automatically stop heating when the water temperature is higher than 35℃.

1)A compact black fish tank heater, easy to be hide in tank. With 2 strong suction cups on the backside, the heater will firmly stick on to the tank, no turtles or fish can push the heater out of water.

【External Controller】Easily set the temperature on the controller, high precision temperature control system, can set the temperature range of 17-34℃. Each time you set the temperature, simply press the button repeatedly until it reaches your desired temperature, then stop, wait for the number to blink 3 times, and then the setting is complete. Once the temperature is set, the aquarium heaters will heat the water to the set temperature, and then automatically stop heating, no need to operate.

【Digital Temperature Display】There is an LED display in the middle of the front of the water fish tank heater, which can display the water temperature and set temperature in real time. When the adjustment button is pressed, the temperature flashes to display the set temperature. When the temperature setting is complete, the LED will always show the water temperature. Only when you press down on the controller will the LED display the set temperature number.

【Double Safety Protection】This is an automatic heater for aquarium fish tank, with water level sensor device, automatically stop heating after water. After completing the temperature settings, you can rest assured that it will keep the tank water at the temperature you set. When the actual water temperature is higher than 35℃, the pond heater automatically starts overheating protection and stops heating.