Doorbird 423868663 Round Call Button D21X

Product Description

The DOORBIRD 423868663 is a round call button designed as a separate accessory for the D21X series video door station system. It provides a dedicated visitor-activation trigger for intercom and access-control installations where a standalone call button is required outside the primary door station unit. Licensed electricians and low-voltage integration technicians typically install this component as part of a complete entry-communication setup. The button ships as a single unit and is intended for use in North American installations.

This call button is suited for residential and light-commercial intercom installations where the D21X door station serves as the central communication hub. It is installed in scenarios where the call function must be physically separated from the main door station — such as multi-entry configurations, gated approaches, or panel-mounted setups requiring a dedicated activation point.

Key Features

• Round form factor designed for flush or surface-mounted intercom installations
• Separate accessory unit allowing flexible placement independent of the main door station
• Compatible with the D21X series door station platform
• Single-unit packaging for straightforward replacement or system expansion

Compatibility

Designed for use with the DOORBIRD D21X series door station as a separate call button accessory for North American installations.

Installation Notes

Installation should be performed by a licensed electrician or qualified low-voltage technician familiar with intercom and access-control systems. De-energize the door station and any associated power supply before making wiring connections. Follow local electrical codes and the manufacturer wiring documentation for proper termination. Verify polarity and signal-line connections before restoring power to the system.