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Variable Temperature Control VTC-1D

Variable Temperature Control VTC-1D


One of our most popular variable speed fan controls

The Variable Temperature Control automatically controls the temperature in a room by adjusting the speed of variable speed fans.

How it works

  • When the temperature is at the temperature set point, the VTC-1D operates the fans at the idle speed setting.
  • When the temperature exceeds the set point, the VTC-1D increases the speed of the fans.
  • When the temperature drops below the set point, the VTC-1D shuts off the fans (shut-off mode) or operates the fans at idle speed (idle mode).

The VTC-1D is ideal for poultry, livestock, greenhouse, or light industrial buildings.


  • One variable speed output
  • Automatic shut-off and idle modes
  • Adjustable off set-back for shut-off mode (0 to 16°F)
  • Adjustable idle speed for idle mode (0 to 99%)
  • Adjustable temperature set point, range: 32 to 99°F (0 to 37°C)
  • Adjustable temperature differential (1 to 20°F)
  • Three-second full-power-turn-on to minimize fan ice-up
  • LED display
  • Fahrenheit and Celsius display
  • Error code display for troubleshooting
  • Overload protection fuse
  • Six-foot temperature probe, extendable to 500 feet
  • NEMA 4X enclosure (corrosion resistant, water resistant, and fire retardant)
  • CSA approval
  • 2 year warranty