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# TECHNICAL DRAWINGS
**D2101KV/D2201KV/D2102FV Fingerprint 50/D2202FV Fingerprint 50/D2102FV EKEY sLine/D2202FV EKEY sLine Flush-mounting housing (backbox)**
> Figure: DoorBird logo with stylized bird icon. Text: “DoorBird” and “Technology meets Design.”
> Figure: Product photo of a rectangular stainless-steel flush-mounting housing/backbox, shown in perspective. It has a black front frame, internal mounting holes and brackets, and side protrusions.
> Figure: Front technical drawing of the flush-mounting housing. Rectangular housing with mounting brackets at the upper and lower corners, dashed internal outlines, central mounting holes, and a lower rectangular cut-out. Dimensions and labels:
>
> - Ø50,00 mm / 1.97 in
> - 65,00 mm / 2.56 in
> - 126,50 mm / 4.98 in
> - 273,50 mm / 10.77 in
> - 347,50 mm / 13.68 in
> Figure: Side technical drawing of the housing, showing mounting tabs, holes, a central rectangular opening, and dashed internal lines. Vertical dimension: 325,00 mm / 12.80 in.
> Figure: Top/bottom technical drawing showing the housing width, central recessed section, mounting holes, and a rectangular opening. Dimensions and labels:
>
> - 45,00 mm / 1.77 in
> - 25,00 mm / 0.98 in
> - 70,00 mm / 2.76 in
> - 107,00 mm / 4.21 in
**Important note for cavity mounting (e.g. in pedestals and mailboxes):**
> Figure: Water-droplet/diagonal protection symbol. Text: “To protect the electronic units, please ensure that the technical components are protected against dripping and running water caused by condensate or entering the mounting space through openings. To protect the electronic units, ensure that the mounting space inside is not accumulating water.”
> Figure: Airflow/wavy-arrow symbol. Text: “Sufficient air circulation must be ensured, as well as unobstructed drainage of water at the base of the installation.”
Failure to do so will result in warranty being declined.
General tolerance DIN/EN 2768 -mK
Wall cut-out dimension +4 mm/0.15 in
Part of ASSA ABLOY
Errors and omissions excepted. | Last update 06/2026 - Copyright © ASSA ABLOY – www.doorbird.com