Finnex HMH-X 500 Watt Digital Titanium Aquarium Heater

HMH Series Overview Virtually Unbreakable Titanium Tube 3 Digit Digital Display & Control 1/10th Degree Temperature Calibration ± .5°F High Precision Accuracy Temperature Steady Low Variance Technology NOTE: Must operate in water with TDS readings above 150ppm The HMH heater series uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from a sensor in the heater tube. The internal sensor contains no bi-metallic contacts to arc, corrode or wear out. This allows HMH heaters to have precise control, keeping the water temperature stable while avoiding wide temperature swings found with low-quality aquarium heaters. The controller displays the current temperature, allowing you to easily make temperature adjustments on the front panel. Temperature can be adjusted by a tenth of a degree. The internal sensor functions as an automatic power cut-off switch. If the water level drops too low and