Toshiba MDFB Door Phone/Monitor Station (refurbished, 1 year warranty). Pictured MDFB is what will ship. 

• Chocolate Brown Color
• Compatible with Toshiba DK or a Toshiba CIX Telephone System.
• Maximum 12 MDFB per Digital System or 6 per Analog System
• Requires DDCB or HDCB (Maximum of 3 MDFB per DDCB or HDCB)
• Can be used with door locks