SONY RMX91 Audio Remote Control is guaranteed to work with the following Audio System models:

Originally supplied with Audio System models: SONY 10600, SONY CDX60X, SONY CDXC50, SONY CDXC5000X, SONY CDXC5005, SONY CDXC5050, SONY CDXC5050X, SONY CDXC5055, SONY CDXC7000S, SONY CDXC7000X SONY CDXC7050X SONY CDXC72000X SONY CDXC780 SONY CDXC8050X SONY CDXCS7000X SONY MDXC6500X SONY MDXC800 SONY MDXC800REC SONY MDXC8500R SONY MDXC8500X SONY RMX47 SONY RMX4S SONY XPL536PKG SONY XRC5300X SONY XRC5305 SONY XRC7350X

Compatible with Audio System models: SONY HCDH160, SONY HCDH1600, SONY HCDH300, SONY MCHM300AV, SONY MDXC7900, SONY MHC160, SONY MHC1600, SONY MHC1600/H, SONY MHC1600/HC, SONY MHC1600CD SONY MHC1600H SONY MHC300 SONY RMS155 SONY RMTV209 SONY SLVAV100 SONY SLVAV1000 SONY SLVAV100U SONY TCH1600 SONY VR610HF SONY XRC5100 SONY XRC7220