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julian bf37106c5c wiki: ingest GEE-QR-ER80 QR access reader datasheet 
The reader on hand is a GEE-QR-ER80 QR/DataMatrix/1D barcode access reader
(not an EM4100 prox-card reader as first guessed). Interfaces: Wiegand 26/34,
RS-232, RS-485, USB, TCP/IP; 4-15 VDC; Linux-supported. Variant on hand: -Q-W
(QR scanner, Wiegand/RS-232/485).

This is the QR-ticket scanner the design already needed: a host-side reader
whose scans become read-bus events consumed by the (already-built) exit flow
and QR-permit path. Prefer RS-232/485 over Wiegand (Wiegand can't carry a
variable-length QR string; autonomy is moot with the no-ACL Dingtian).

New source + entity pages; updated ticket-encoding, entry-exit-readers, index.
Open (blocks the adapter): the RS-232/485 frame + baud (ASCII CR/LF expected).
2026-06-16 08:22:23 +02:00

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gee-qr-er80
2026-06-16

Source: GEE-QR-ER80 QR Code Access Control Reader (datasheet)

Vendor datasheet (GEE NFC LIMITED, ©2007–2019) for the GEE-QR-ER80 — a static QR-code access-control reader, optional ID/IC card. The reader the project has on hand for the ticket-encoding path. Raw: raw/GEE-QR-ER80 QR Code Access Control Reader.pdf (3 pages). Entity: gee-qr-er80.

Key takeaways

  • Optical scanner, not a prox-card reader: reads QR, DataMatrix, 1D barcode (static). Optional add-ons for IC card UID / ID card.
  • Multi-interface: Wiegand 26/34, RS-232, RS-485, USB, TCP/IP — selectable by variant.
  • Power: 4–15 VDC, < 800 mA. Read direction: 360°. Built-in scanner LED.
  • OS: Windows XP/7/8/10 and Linux (explicit) — fits the disk-os-hardening.
  • Wiring (Wiegand/RS-232/485 variant): VCC(+12V), GND, D0/D1 (Wiegand), TX/R+ , RX/R- (RS-232 / RS-485), plus LED and BEEP control lines (host can drive feedback).
  • Order code GEE-QR-ER80-<scanner>-<interface>: Q=QR scanner / D=ID reader / C=IC reader; W=WG·RS232·RS485 / U=USB / T=RJ45 (TCP/IP). On hand: -Q-W (QR scanner; Wiegand/RS-232/RS-485).

Section map

  • p1 — overview, physical + feature table (interfaces, power, read direction).
  • p2 — supported types (QR/DM/1D + optional IC/ID), OS, environment; wire definition (pin table).
  • p3 — order-code breakdown, applications (access control / vacation rentals / time attendance).

Not in this datasheet (open)

  • The RS-232/RS-485 data protocol: baud rate, frame format, and whether a QR scan is emitted as an ASCII string (expected) vs. some framed protocol. Decides the host-side adapter — see gee-qr-er80 open questions. Resolve by vendor docs or by observing the port on a scan.
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