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The HC-820W controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium
Dual display shows real‑time temperature and setpoint simultaneously
The 24/7 feature starts with a cool lit Dawn
Easily adjustable high/ low-temperature settings with an audio alert separates this aquarium heater controller from the rest of the competition
Finnex Digital Aquarium Controller HC-820W Series Finnex Power Supply The HC-820W controller uses anThe HC 820W controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from the remote sensor in the aquarium. The remote sensor contains no bi metallic contacts to arc, corrode or wear out. This allows the HC 820W to have precise control, keeping the water temperature stable while avoiding wide temperature swings common with low quality aquarium