hygger submersible variable frequency quartz aquarium heater is the perfect fish tank heater for freshwater or saltwater
2. When a probe fails, the heater will still work normally to avoid accidents.Out of Water Protection1. When the heating rod is out of the water, it will automatically stop heating and emit a warning signal to avoid burning the heater rod.
2. LED display flashes E01.Overheating Protection1. When the heating rod is over temperature, it will automatically stop heating and emit a warning signal to prevent fish from boiling.
2. LED display flashes E02.
2. Explosion-proof quartz glass and high-temperature resistant nickel-chromium heating wire make the water heating safer, more stable, and long lasting.Non-leakage1. Quartz insulator, non-leakage, and non-conductive，safe for fish.
2. Quartz thickened glass tube is sealed in one piece, anti-corrosion, is perfect for seawater and freshwater.Precise Temp Control (54℉~90℉)1. The three-digit LED display can accurately display to 0.1℉.
2. Press the “SET” button one time can change 1℉.
3. Rotate the SET button one time can changge 0.5℉.
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