Check out these features:

• This proportional controller mimics nature by continuously adjusting the amount of power delivered to the heater, as opposed to simply turning ON and OFF as done by other manufacturers.
• The new digital interface is simple and easy to use. Set the desired temperature using just one button. Check the programmed set-temperature anytime by simply pressing the button. There is no ‘trial and error’ common with analog systems that cannot display the set-temperature. You get the desired temperature the first time you program the unit.
• The programmed set-temperature values are stored in a type of memory that keeps its values even when power goes out, thus settings will never be lost. This new low-cost system is designed to be the utmost in reliability in maintaining the ultimate health of your special animal. The system even has built-in fault checking that will let you know if the temperature probe is damaged.
• Installation is very simple and fool-proof with the new "One-Piece" construction
• The new LED display is highly visible from across the room—even at night.
• This system is expandable with many of Helix Controls’ accessories, such as the Day-Night Photocell or 24 Hour Timer for dropping the temperature at night, Lighting Controllers, or even Power Modules to increase heater capacity.
• The display has a resolution of 1.0 degrees Farenheight, but the internal resolution is calculated to 0.25 degrees Farenheight.
• The remote probe is standard at 5 ft. long with a 0.3 inch max diameter for easy setup. Custom length probes can be ordered.
• These have a 500 Watt capacity