Hello, it's my pleasure to serve you! There are many types of smoke control fan controllers, including one-way fan controllers and two-way fan controllers. At the same time, from the perspective of customers' actual application needs, products are constantly upgraded and developed, and their functions are becoming more and more perfect.
One-way smoke control fan controller GYXF2000- 1DF
Two-way smoke control fan controller GYXF2000- 1SF
Two-way single-speed smoke control fan controller GYXF2000-2DF