RC101 is the first remote controller that optimized for multi room usage. This means the first remote which is sending independent multi-room code to control sound in Zone A, Zone B and Zone C. Also it is possible to setup the remote to be used in the main room as an easier to use, less button remote compared to the standard remote coming with the system. A perfect companion to our multi zone receivers. The RC101 comes preset to control the second and third zone. No flipping a switch, no multiple button presses to active zone two or controlling the connected source equipment. It is pre-programmed to control Marantz equipment, but in the internal database code sets for other brands products are already available. Furhter on the remote can learn codes directly as well.