Apartment, Multifamily & Rental Property Access Control
Apartment building access control hardware: anti-clone readers with matched fob sets, QR visitor codes, 4G controllers for rentals and UHF tags for gates.
ValenID · valenid.com · sales@valenid.com
QC-140 Slim Mullion IP67 QR Code & 13.56 MHz Card Reader
Keyless 138 × 58 mm mullion reader that decodes QR codes and 13.56 MHz card UIDs behind an IP67 glass front, with Wiegand, RS485 and USB outputs.
- Keyless 138 × 58 × 22.67 mm mullion body for stiles, glass doors and gate posts
- QR range 5–18 cm, ~100 ms average decode, 360° rotation and ±45° tilt tolerance
- Reads 13.56 MHz UIDs: MIFARE Classic, Ultralight, DESFire EV1, NTAG, ISO/IEC 15693, NFC phones
- IP67 metal frame and glass front
- Wiegand, RS485 (active upload) and USB outputs
- Form factor
- Mullion, 138 × 58 × 22.67 mm
- Credentials
- QR / 1D codes + 13.56 MHz card UID
- Outputs
- Wiegand, RS485, USB
- QR read range
- 5–18 cm
- Ingress rating
- IP67
- Power
- 12 V DC ±5%, ≤ 200 mA
Reply within 24 hours Tested before dispatch Worldwide shipping
Slim Mullion IP67 QR Code & 13.56 MHz Card Reader: overview
The QC-140 is a slim mullion QR code and RFID reader: a keyless 138 × 58 mm IP67 body, the narrowest and simplest model in our metal-frame series. It fits door stiles, glass partitions and turnstile posts, and sends each QR or card read to the controller that makes the access decision.
Scanning uses a 648 × 488 sensor with dual fill lights, so paper tickets and phone-screen codes still read at night. Working QR distance is 5–18 cm and the average decode takes about 100 ms; codes can be presented at any rotation with up to ±45° of tilt. On the RF side it reads 13.56 MHz UIDs from MIFARE Classic 1K/4K, MIFARE Ultralight, MIFARE DESFire EV1 and NTAG cards, other ISO/IEC 14443A cards, ISO/IEC 15693 tags and NFC phones in card-emulation mode. The metal frame and glass front carry an IP67 rating.
Integration notes
Use Wiegand D0/D1 for standard controllers, RS485 with active upload for host software, or USB via the Mini USB port. Supply 12 V DC ±5% (below 200 mA). Control wires are labeled BUZZ, LEDG and NG, so verify the feedback logic with your controller before commissioning. The housing is 138 × 58 × 22.67 mm; to add a touch keypad, choose the QC-120.
More features
- 12 V DC ±5% at ≤ 200 mA
QC-140 specifications
RF & credentials
| Frequency | 13.56 MHz |
|---|---|
| Cards (UID read) | MIFARE Classic 1K/4K (S50/S70), MIFARE Ultralight, MIFARE DESFire EV1, NTAG, CPU cards, other ISO/IEC 14443A cards, ISO/IEC 15693 cards |
| NFC phones | Card-emulation mode (UID) |
| Card read distance | More than 5 cm (varies with card type) |
QR & barcode scanning
| Code sources | Printed (paper) and on-screen (electronic) codes |
|---|---|
| Symbologies | QR Code, Data Matrix, PDF417, UPC-A, UPC-E (E0/E1), Code 11, Code 39, Code 93, Code 128, Codabar, Interleaved 2 of 5, Matrix 2 of 5 |
| QR read distance | 5–18 cm (depends on code, scan angle and ambient light) |
| Decode time | 100 ms (average) |
| Presentation angle | 360° rotation, ±45° tilt |
| Field of view | 34° (H) × 26° (V) |
| Sensor resolution | 648 × 488 pixels |
| Illumination | Dual fill lights |
Interfaces
| Access control output | Wiegand (D0/D1) |
|---|---|
| Serial | RS485, with active-upload mode |
| USB | Mini USB port; USB-to-Mini-USB cable, 1,500 mm |
| Feedback control | Buzzer and LED control wires |
| Keypad | None (keyless front) |
Electrical
| Supply voltage | 12 V DC ±5% |
|---|---|
| Current | ≤ 200 mA at 12 V; ≤ 500 mA from USB 5 V |
Mechanical & environment
| Dimensions | 138 × 58 × 22.67 mm (±0.3 mm) |
|---|---|
| Housing | Full metal mullion frame, glass front panel |
| Ingress protection | IP67 |
| Operating temperature | –10 to +50 °C |
| Storage temperature | –20 to +80 °C |
| Operating humidity | 20–80% RH |
Wiring (flying lead)
| Wire color | Signal |
|---|---|
| Red | +12 V DC |
| Black | GND |
| White | Wiegand D1 |
| Green | Wiegand D0 |
| Purple | BUZZ (buzzer control) |
| Gray | LEDG (LED control) |
| Yellow | NG |
| Blue | RS485+ |
| Orange | RS485− |
Check the LEDG and NG control logic against your controller before final wiring.
Metal-frame QR reader series
| SKU | Housing | Touch keypad | Outputs | Ingress |
|---|---|---|---|---|
| QC-110 | 120 × 80 × 22.67 mm | Yes | Wiegand, RS485, USB | IP67 |
| QC-120 | 138 × 58 × 22.67 mm (mullion) | Yes | Wiegand, RS485, USB | IP67 |
| QC-130 | 120 × 80 × 22.67 mm | No | Wiegand, RS485, USB | IP67 |
| QC-140 | 138 × 58 × 22.67 mm (mullion) | No | Wiegand, RS485, USB | IP67 |
Same scanner, card reader, outputs and IP67 rating; choose by housing and keypad.
Specifications can change between production batches. Confirm the current revision with us before placing volume orders.
Ordering options
Quote the SKU that matches your frequency, interface and mounting. Not sure? Send us your controller model and we will pick the variant for you.
| SKU | Configuration | Actions |
|---|---|---|
| QC-140-M | 138 × 58 mm metal mullion, no keypad; QR codes + 13.56 MHz UID; Wiegand, RS485 (active upload) and USB |
Where the QC-140 is used
- Turnstile posts and speed-gate flanges with limited surface width
- Glass partition doors in offices and co-working floors
- Outdoor pedestrian gates where visitors scan a QR pass and residents use cards
- Elevator car or lobby panels that accept QR and card credentials
Elevator Access Control Readers
Elevator card readers for car panels and lift lobbies: anti-clone encrypted cards, QR codes for visitors, Wiegand or RS485 output to the floor controller.
Turnstile & Speed-Gate Readers: QR, RFID and Face
Turnstile card readers, QR scanners and face terminals for tripod, swing and speed gates, with Wiegand, RS485, RS232 or TTL output to the gate board.
QC-140 FAQ
Which controllers is the QC-140 compatible with?
Any controller or turnstile board with a Wiegand input, plus hosts that read RS485 or USB. Common Wiegand formats carry a short numeric ID, so confirm your QR content maps to the format the controller expects.
Is the QC-140 suitable for turnstiles?
Its 58 mm width suits turnstile posts with limited space, and it outputs Wiegand or RS485 to the turnstile board. For a reader hidden inside the turnstile cabinet, the embedded QC-180 module is an alternative.
What is the difference between the QC-140 and the QC-120?
Both use the same 138 × 58 mm IP67 mullion housing, scanner and outputs. The QC-120 adds a touch keypad under the glass; the QC-140 is keyless.
What temperature range does it handle?
It operates from –10 to +50 °C and can be stored from –20 to +80 °C, with 20–80% relative humidity.
Before you buy
Related buyer guides
Wiegand vs OSDP vs RS485: Which Reader Interface Should You Specify?
Compare Wiegand, OSDP and RS485 reader interfaces: wiring, cable limits, AES-128 Secure Channel and steps for a compatible access-control migration.
125kHz vs 13.56MHz: Choosing Access Cards and Readers
125 kHz cards are cheap but easy to clone; 13.56 MHz cards add memory and, on DESFire-class chips, AES security. Compare range, chips, security and migration.
Wiegand 26-Bit Format Explained (with a Free Calculator)
Wiegand 26-bit is an even parity bit, 8-bit facility code, 16-bit card number and odd parity bit. Convert card numbers to hex and back with the calculator.
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Get pricing for the QC-140
Send your card type, interface and quantity. You get a quote, lead time and compatibility notes within 24 hours — samples available for most items.