The Futaba R2001SB is a dedicated S.Bus receiver making it especially suited to use on multirotor/drone models. The single SBUS wire can connect to most of the popular flight controllers reducing the amount of connections needed for a lighter, simpler, more reliable and cleaner installation. Stripped back to essentials the R2001Sb weighs in at only 4.2g thanks to its compact dimensions and heat shrink case. Don't let the compact size fool you as the R2001SB is capable of the same full range you as any other S-FHSS receiver thanks to the dual diversity antennas.
The R2001SB isn't limited to just drones as the compact form factor lends itself to many other models (such as helicopter and aircraft) where a compact and neat installation is required taking advantage of the S.BUS technology.