This is a custom built replacement remote made by Redi Remote for the Marantz ZK201J0010. *This is NOT an original Marantz Remote Control. It is a custom replacement remote made by Redi-Remote* This remote control is specifically designed to be compatible with the following models of Marantz units: ZK201J0010,RC63SR, SR63, SR53. *If you have any concerns with the remote after purchase, please contact me directly* There is a cover over the lower half of the remote. This will slide down to reveal the lower half buttons.