The WFAN-1 EC Fan module allows you to control 2 separate EC fans. EC fans are great due to their high efficiency and ability to operate at varying speeds. The WFAN-1 module can control ALL EC fans that utilize a standard 0-10v control signal. Simple 2-wire, (0-10VDC) low-voltage connections connect your fans and the WFAN-1 module. The WFAN-1 communicates with the Croptiva main controller. The WFAN-1 controls the fans based on the user’s desired settings. You can select temperature, humidity and speed settings for Day & Night, use Croptiva’s “Artificial Wind” mode, and disable the fans due to low temps, low humid or if smoke is detected within the area.