The Sony RMSD50 Audio Remote Control is originally supplied with Audio System models: Sony HCDD570, Sony HCDN350, Sony HCDN355, Sony HCDN355K, Sony HCDN455, Sony LBTD57, Sony LBTD570, Sony LBTN355, Sony LBTN355K, Sony LBTN355KR Sony MHCD7 Sony RMDS50 Sony RMSD50

The Sony RMSD50 Audio Remote Control is compatible with Audio System models: Sony HCCD270, Sony HCDD170, Sony HCDD270, Sony HCDG1100, Sony HCDG3100, Sony HCDH331, Sony HCDRX30, Sony HCDRX33, Sony LBTD170, Sony LBTD27 Sony LBTD270 Sony LBTG1000 Sony LBTG1100 Sony LBTG3100 Sony MHC331 Sony MHCRX30 Sony RMS025 Sony RMSE2AV Sony SONDVPS530D