The NuTone NRS104WH Indoor Remote Station was marketed for use with the 4-Wire version of the NuTone® model NM100AL & NM100WH Radio-Intercom system. The label identifying the model is on the bottom edge of the Master Station face plate. (If you are replacing interior room stations, they will be marked NRS104WH on the back of them. There is two others that look like the NRS104WH—They will not have 4-Wire Cables connecting them!)

The NRS104WH Room Station can also be used on M&S models MC302, MC602 & DMC3-4.  The label identifying these models is on the bottom edge of the face plate. 

      Fun facts: 

• The NRS104WH Room Station directly replaces M&S model N65RS Room Station. (It is physically larger, though.)
• M&S Systems was originally named Music & Sound.
• M&S Systems was called Linear in their later years.
• NuTone NM100 system is the M&S DMC3-4 system with a different face plate.
• NuTone NM100 system looks exactly like the NuTone NM200 system. They do not interchange.
• M&S DMC3-4 system looks exactly like the M&S DMC1 system.  They do not interchange.
• If you use the NRS104WH Indoor Remote Station on the your patio it will short down your entire system.
• If you use the M&S Indoor Remote Station outdoors it will short down your entire system.
• Smart, good looking people contact Beachippie-FLA (Also known as Dale da NuToneMan) if they are not absolutely sure that they are buying the right item.