There are 75 versions of the FR-A Series The DC receivers are not interchangeable like AC receivers You cannot substitute one dash to replace another; It will not work properly or, in most cases, not at all. FR-A786N-04A Ceiling Fan Receiver. This will only work to replace Fr-A786N-04A. The style is RH786NRW. There are 75 dash numbers. They look the same, but will not work to replace each other.