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The Tri-Star allows for integration of all of your ventilation components for complete control over your barn environment.

    Expert Tri-Star Control
  • Natural ventilation (8 zones of panels / curtains) (2 zones of chimneys)
  • Proportional control without potentiometers
  • Winter and summer settings
  • Wind direction / speed and rain sensing is available with the weather package allowing the Tri-Star to control the ventilation with regards to real time weather systems
  • 4 zones of fans can be set up for either tunnel or circulation
    2 of these fan zones can be tied directly to Altra-Air fans

The Tri-Star is an expert dairy control that offers many options for controlling your barn ventilation in 1 easy to use package!


Shepherd ControlsSun-North Shepherd controls are state of the art electronic controls which are able to monitor many different regions of your animal facility. Shepherd controls will adjust individual sidewall panels and ridge outlets over the entirety of your building taking into account inside temperature and outside weather conditions and adjusting for swings in wind and rain directions.

All livestock buildings create micro climates (very noticeable areas of temperature differences). Shepherd controls will monitor and adjust for these areas of temperature difference.

Natural ventilation can save 65% of your energy cost (compared to all power and mechanical ventilation). Shepherd electronic controls will link to supplementary heating, cooling and humidity equipment and adjust accordingly.