MDFBs are often used with a door lock to screen building visitors. Door phones also can operate as a “hot line.” For example, a door phone can be used for calls between an office and a warehouse (requires DDCB).

• DK14 can have up to 6 door phones
  
  
• DK40i can have up to 9 door phones
  
  
• DK424 can have up to 12 door phones

This product is also available refurbished. Click here!

Subject to product availability.