NuTone Replacement.com

RETRO Intercom Replacement System for Upgrade and of Old Intercom Systems Includes: 

• AM/FM, MP3 connection 
• Bluetooth ® Music Option 
• MyDoor Smartphone Doorbell Option. 
• EZ Step By Step Replacement "Plug and Play"

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*Global chip shortages and International Shipping…

History 

The first telephone-based intercom was patented in 1894 by the Kellogg Switchboard and Supply Company. When a guest pulled a handle on a panel at the entryway of a building it would close a circuit (or relay), allowing an…