• The GH*0SA controller contains a database with *7 of the most popular
   configurations, including the East-West solar heating variant.
• Audio and visual warning appears in case of system alarm.
• Possibility adjustment of display backlight intensity and time out.
• Manual cooling function.
• In case of power failure the controller keeps user-defined settings unchanged
  after restart.
• Volume control for system alarm and keyboard.
• Ability to integrate with devices which use **0V power supplies like: *-way
  valves, circuit pumps, collector pumps and back-up electrical heaters.
• Controller contains manual control function, where each device can be
  separately activated and deactivated. Current status of device operation is
  always displayed in the system scheme during manual and automatic work.
• Collector pump rotation speed adjustment.
• The Controller has an inbuilt module for recording average power collected and
  the energy generated by the panels. The Controller enables recording and
  readout of power and energy statistics for user-defined intervals.
• Mounted real time clock with independent power source.
• Possibility pioritise heating in expanded installations.
• Panel overheating prevention function to protect panel against damage.
• Holiday function - for economic use while away.
• Anti-Legionella function for protection from legionella bacterium.
• Cold weather protection to prevent freezing during winter.
• Enables panel type selection, between flat plate / tube.