The PK125 EC-Blue brings EC technology to a 125mm flange. It moves up to 680m3 per hour and draws between 0 and 170 watts, scaling power to match the airflow you set. The EBM Papst motor runs near-silently and varies infinitely rather than in fixed steps.
Plug the ECTC-1 controller into the RJ45 port to hold a target temperature and bracket the speed between a minimum and maximum. That keeps a grow room steady as lights cycle. The fan ships with a mounting bracket and cable and carries a one-year warranty. Duct it to a 125mm carbon filter for quiet, efficient odour control.