
Development and assembly of the smart digital door sign DoorTag with ePaper display – hardware and software Made in Germany

SOHACO UG (haftungsbeschränkt)
KrauchenwiesNew on Amplifa
About DoorTag
SOHACO UG (haftungsbeschränkt) develops the smart digital door sign DoorTag with an ePaper display, which shows a person's status, e.g. “Busy”, “Available” or “On Air”. The device can be controlled manually or automatically by time and date via an app (Windows/Mac, mobile apps planned) and can be synchronized with Microsoft Teams, Slack and calendars. The display transmits content wirelessly over a distance of more than 5 metres; according to the manufacturer, the battery life is around 9 months with daily use (charging via USB-C). Frames are available in plastic (PLA/PETG, matte or glossy), brushed aluminium or wood (beech, cedar); custom frame designs are possible. Assembly of the DoorTag takes place in Germany (Made in Germany). The market launch is announced for mid-2026; a shop launch in Germany is planned. Fields of application are home office, office and meeting rooms, studios and streaming, medical practices, law firms as well as hotels and holiday accommodation.
- Site
- Krauchenwies
- Processes
- Assembly (product company DoorTag – assembly of the smart door sign, Made in Germany), 3D printing (plastic frames in PLA/PETG, matte or glossy – mentioned as a material option), Engineering/product development (hardware & software, app development, electronics ePaper display), App control (Windows/Mac, mobile apps planned), Automated status display by time/date, Integration with Microsoft Teams, Slack, calendars, Custom frame designs
- Materials
- PLA, PETG, Aluminium (brushed), Wood – beech, Wood – cedar, Plastic PLA, Plastic PETG, ePaper display
- Industries
- Home office, Office/meeting rooms, Studios/streaming, Medical practices, Law firms, Hotels/holiday accommodation
- 01
Engineering/product development (hardware, software, app)
- 02
Assembly of the smart door sign in Germany
- 03
Distribution via online shop
Materials and processes
Plastic PLA
Frame material in matte or glossy as an option for the DoorTag housing.
Plastic PETG
Frame material in matte or glossy as an option for the DoorTag housing.
Aluminium (brushed)
Brushed aluminium frame as a design option of the DoorTag.
Wood – beech
Wooden frame with a tolerance of ±2 mm as a design option.
Wood – cedar
Wooden frame with a tolerance of ±2 mm as a design option.
ePaper display
Display technology that only consumes power when the content changes, enabling the long battery life.
App/software development
Free app for Windows and Mac for manual and automated control as well as integrations with Microsoft Teams and Slack.
Sites
Krauchenwies
DECompany headquarters
- Materials
- PLA, PETG, aluminium, wood (beech, cedar)
Components



Inside the production












Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Assembly (product company DoorTag – assembly of the smart door sign, Made in Germany)Assembly | – | 168 mm × 62 mm × 10 mm | – | – | PLA, PETG, Aluminium, Wood (beech, cedar) |
| 3D printing (plastic frames in PLA/PETG, matte or glossy – mentioned as a material option)Plastic | ±2 mm (for wooden frames) | – | – | – | PLA, PETG, Aluminium, Wood |
| Engineering/product development (hardware & software, app development, electronics ePaper display)Engineering | – | – | – | – | – |
Additional services
History
- 2026
Market launch of DoorTag announced for mid-2026