Hygger 800W Submersible Aquarium Heater with LED Digital Temperature Controller - Fast Heating for 120-180 Gallon Fish Tanks | Perfect for Freshwater & Saltwater Aquariums, Tropical Fish Tanks

Note: When using this heating, the heating should be submersible in the water and should not be exposed to the water surface.It is necessary to regularly clean and clean the heating plate. If the heating plate is attached with impurities, the heating efficiency will be reduced. It can fully convert electric energy into heat energy, saving energy and safety. Can be used for freshwater. After the water evaporates, the heater is exposed to the water surface, it will automatically cut off the electricity. Over-temperature protection system, when the temperature in the tank is over 97 °F will stop heating, to avoid fish from boiling fish due to high temperature. Three-digit digital display, accurate to 0.1 °F, easy to grasp the temperature value and working status. Three-pin plug, prevent electric leakage and electric shock. A double temperature probe prevents the single temperature probe from being damaged and causing no heating or over temperature. Automatically remember the temperature, when used after a power failure, the temperature no need to set. The outer casing is made of ABS material, which and can withstand certain gravity, effectively preventing damage caused by fish. A strong suction cup bracket, can stably fix the heater in every corner of the fish tank.

LED DIGITAL DISPLAY CONTROLLER Displays real-time water temperature or set temperature, three-digit display, water temperature display accurate to 0.1 °F, easy to read. 4 kinds of work instructions - Working/Malfunction/ Thermostatic/ Out of water, easy to understand. Upgrade the buttons to increase the sense of touch, and the operation is simple and easy, just cycle the buttons

RAPID HEATING Fastest 5 seconds warming, the internal material is updated and upgraded, using titanium steel material, which is safer to use, not easy to deform, and has very strong corrosion resistance. Automatically reduces power when approaching the set temperature, fully utilizes thermal energy inertia to smoothly reach the set temperature, saving energy

INTELLIGENT THERMOSTAT Over-temperature protection prevents "cooking fish". When the water temp exceeds about 93.5 °F, start alternately flashing EE fault code; and over 97℉, the heater will stop heating automatically. When the water temp cool down to 93℉, the heater will start working automatically. In addition, it has a power-off memory function and no need to set it again

ANTI-DRY PROTECTION When the heating rod is exposed to air, display ER fault code and the heater will shut off automatically. When the heating rod is completely immersed in water, it will start working automatically. Effectively extend the service life

HIGH-QUALITY MATERIALS Built-in dual temperature probe, real-time monitoring of water temperature, temperature accuracy of ± 1 °F; high temperature resistant ABS material, no deformation and no softening, explosion-proof and anti-corrosion, no leakage of electricity. Strong suction cup bracket, can stably fix the heater in every corner of the fish tank