Akuvox MD12 Button Module for R20K/B via RS485

The Akuvox MD12 is a button module designed to expand the tenant directory of Akuvox R20K and R20B intercom systems. It communicates via RS485 with the outdoor panel, allowing visitors to quickly call residents using dedicated buttons. Multiple MD12 modules can be daisy-chained to support larger multi-dwelling buildings.

• Compatibility: Works with R20K and R20Bx panels
• Power Supply: DC 12 V
• Communication: RS485 with external panel
• IP Rating: IP65 – weatherproof for outdoor use
• Dimensions: 185 × 85 × 24 mm (compact design)
• No opening function – purely a calling module
• No app control – hardware-based operation

Note: Flush-mount box is not included. For full technical details, refer to the datasheet in the attachments.