This is a follow up Video about the two 1903's NuTone 2-Note Door Chimes in the first Video of this PlayList After some doing research, I found more interesting information that not only confirms the date of these NuTone Chime - but tells about their history Here's a link to The 1930's Electrical Catalog with the Pictures: http://northsideforyourhome.squarespace.com/vintage-nutone-door-chime-adve/?currentPage=2 Here's a link to the Patent: http://northsideforyourhome.squarespace.com/intercom-system-owners-manuals/?SSScrollPosition=0 Here's a Link to our Intercom Repair Request Form: https://docs.google.com/forms/d/e/1FAIpQLSdQHT6fVgm25twaXFeCkkgeITEfAE_zlRBry6B8-GbIs19wcQ/viewform?formkey=dF9RVjBQMFQ5S0xYbTBHMHRoNkVkRFE6MQ For more detailed information about NuTone Door Chimes and Intercom Systems: You Can: Visit our web site: http://northsideforyourhome.squarespace.com Or you can email use at: nscompany@msn.com Or you can call us at: 925-743-8236 ... https://www.youtube.com/watch?v=my-7eG9NBgc

The NuTone NM100 - NM200 along with the Music & Sound (M&S Systems) DMC1 ~ DMC3-4 use a variety or "Electronic Controls", which are located inside "Menus" on the Master Station. Working with the adjustments, inside the Menus are tricky, difficult and often frustrating. Knowing how to set the adjustments is important. In this Video - I take you on a journey through the Menus ~ and explain the how & why you need to know to set them up correctly. . . Here's a Link to our Intercom Repair Request Form: https://docs.google.com/forms/d/e/1FAIpQLSdQHT6fVgm25twaXFeCkkgeITEfAE_zlRBry6B8-GbIs19wcQ/viewform?formkey=dF9RVjBQMFQ5S0xYbTBHMHRoNkVkRFE6MQ For more detailed information about NuTone Door Chimes and Intercom Systems: You Can: Visit our web site: http://northsideforyourhome.squarespace.com Or you can email use at: nscompany@msn.com Or you can call us at: 925-743-8236 ... https://www.youtube.com/watch?v=vOm9FLeOzLI