The RFS 2.2 transmitter is used as a remote control or radio flash trigger for one or more brown generators or compact flash units equipped with an RFS 2 interface. Generators or compact flash transceivers that are not equipped with an RFS 2 interface can be controlled (as receivers) by connecting RFS 2.2. RFS 2.2 includes the new brown HS technology, which allows exposure times of up to 1/8000 second, and is currently available for Siros L, Siros 800 S, Siros 800, and Move with corresponding software updates.