AutoVent, LLC: Automation in Dairy Ventillation

Natural Ventilation Controller


An Energy-Saving Curtain and Fan Controller Using Wind Speed and Temperature

The programmable Commander offers convenient automatic control of your fan circuits for your dairy barn. This system comes with a temperature probe for ambient temperature to control your overhead fans. It also interfaces with an optional anemometer sensing wind speed for additional energy savings. The commander uses THI (Temperature Humidity Index) for optimal cooling equipment control.


  • Eight or Sixteen stage controller
  • Humidity Sensor uses THI for optimal animal comfort
  • Switches fans off when it’s windy outside to save electricity
  • The warmer the temperature, the faster the variable speed fan spins
  • Optional Anemometer measures the prevailing wind
  • Humidity Compensated Cow Cooling
  • Three-digit LED display, status LEDs and keypad to
  • change parameters
  • Fahrenheit and Celsius display
  • Individual adjustable temperature set-points for each stage
  • Eight (8) relay outputs 10 amp
  • Rugged enclosure (corrosion resistant and water resistant)

Note: Each independent curtain uses 2 switches. Each independent fan or soaker uses 1 switch. There are 8 switches available. This means you can have any combination as long as it uses 8 or less switches.

Tech Features

  • 1 temperature sensor (9' cord)
  • 120/240 input power
  • 8 bank output
  • 10 AMP SPDT outputs
  • Controls up to 20 variable speed drives per bank 0-10 V
  • Optional: Humidty sensor for THI or Amp sensor for Smart overload protection
  • Optional Rain Sensors

Upgrade to 50 foot cord sensor. . . . . TSU-1050

Upgrade to 100 foot cord sensor. . . . TSU-1100

Captain 6New!

Captain 6

The Captain6 offers a easy to understand touch screen to control the fan circuits in your dairy barn. It comes with a temperature probe to control any combination of your ventilation equipment. The optional 2nd temperature sensor allows your curtains to be in 2 different zones. Rain detection keeps the stallbeds dry. The humidity sensor allows optimal control for your livestock.


  • User friendly interface, color touch screen
  • Programmable automatic control
  • Can control any combination of curtains, fans or soakers
  • Dry cow beds -- Rain sensor ready for curtains
  • Humidity sensor option
  • Controls variable speed fans


  • Configurable for combinations of fans, curtain, soakers or heaters
  • 6 stages
  • 5 amp output relay per stage
  • Overide latches on output relays
  • 0-10v output for variable speed fans
  • Temperature sensor 10 ft - can be upraded to 100ft
  • Optional 2nd temperature sensor or humidity sensor

Addons & Parts

Power Supply

Power Supply for DC Curtain Motors

Supplies up to four DC motors.

Features thermal overload protection.

  • 300 watt . . . RPS-0300
  • 600 watt . . . RPS-0600

Optional Rain Sensor

This optional sensor extends the capability of the Commander to close curtains during driving rain. One or two rain sensors can be connected and each sensor controls one curtain.

Upgrade to 100 foot cord sensor. . . . . . . URS-1024

Replacement AMP Sensor

Replacement AMP Sensor

This replacement sensor protects your motors and enables Smart Motor Overload Protection for your Commander.

We reccomend using the DTK-120 (120 volt) or DTK-240 (240 volt) surge protector with your Commander.