controller for circulation fans and misting

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Hi,

I have a small homemade greenhouse. I use a combination of ventilation fans and misting to keep my plants cool. I have noticed that the plants seem to cool off better if they are misted with the fans off; then have the fans come on right after the misting for evaporative cooling. Is there any controller that can do this automatically (turn fans on as things heat up; then briefly stop the fans while activating the misting system?)

Thanks!