Gavita FB1 Fan Balancer
The Gavita FB1 Fan Balancer allows you to balance the power of both your intake and extraction fans. By balancing the power of your intake and extraction, you can improve airflow in your grow room which can help to reduce over-pressure.
With Gavita's FB1, its easy and simple to offset your intake fan by between 0 to -70% in order to balance airflow in your grow room. The FB1 allows you to offset your EC intake fan (AC fans require the EFM1 module) while maintaining PID fan control from the Gavita Master controller.