Finnex HC-820W Digital Controller, 3-Digit Display and Control, Calibration Capable, Precision Accuracy

Finnex - Leading Titanium Aquarium Heating Brand Since 2001 - Established industry leader in premium aquarium heater controllers and heating solutions; trusted by aquarium professionals, reef enthusiasts, and serious hobbyists for over two decades of proven reliability

Japanese Precision Sensor Technology with ±.5°F Accuracy - Advanced Japanese-engineered remote sensor eliminates bi-metallic contacts that corrode and wear; delivers superior precision compared to budget aquarium temperature controllers offering ±1-2°F tolerance

Taiwan-Manufactured Professional-Grade Quality - Built to Taiwan's exacting engineering standards; this digital aquarium heater controller combines precision craftsmanship with rigorous quality assurance protocols ensuring years of reliable performance

1000 Watt Dual Relay Protection System - Heavy-duty digital aquarium thermostat controller rated for up to 1000W; dual relay protection safeguards your heater and electrical components; ideal for large tanks, reef systems, and high-power heating applications

3-Digit LED Display with 1/10th Degree Adjustment Control - Easy-to-read digital display shows real-time aquarium water temperature; fine-tune temperature in 0.1°F increments across 49.9°F–94°F range; Temperature Saving Memory protects your settings during power interruptions

Fresh & Saltwater Universal Compatibility - This professional aquarium temperature control system works perfectly in freshwater tanks, marine aquariums, reef systems, planted tanks, and specialized breeding setups; includes extended 32" sensor cord and 66" power cord for flexible installation