The Sony RMSR5B Audio Remote Control is originally supplied with Audio System models: Sony HCDDR4, Sony HCDDR440, Sony HCDDR5, Sony HCDDR6, Sony HCDGRX50, Sony HCDGRX9900, Sony HCDLX30, Sony HCDLX5, Sony HCDLX50, Sony HCDLX6 Sony HCDLX8 Sony HCDLX90AV Sony HCDRXD80 Sony HCDRXD9 Sony HCDW300 Sony HCDW50 Sony HCDW5000 Sony HCDXB500 Sony HCDXG500 Sony LBTLX30 Sony LBTLX50 Sony LBTW300 Sony LBTW5000 Sony LBTXG500 Sony MHCRDX9 Sony MHCRXD5 Sony MHCRXD80 Sony MHCRXD9 Sony RMSR5 Sony RMSR5B Sony RMSR5BLAC