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S4A-QR702 QR Code Access Card Reader

Plug-and-Play USB Interface: Drives via standard USB DC 5V with HID keyboard output for driverless setup and fast data transmission.
Dual-Frequency RFID Support: Compatible with both 125KHz and 13.56MHz card protocols (EM, M1, Desfire, 15693, SONY card, NFC).
Comprehensive Barcode & QR Scanning: Reads 2D QR codes and standard barcodes at distances from 5 to 30 cm with rapid response time (< 100ms).
Wide-Angle Coverage: Offers 360° rotation, 84° diagonal scanning angle, and integrated fill light for reliable performance in low-light environments.
Compact & OEM Ready: Lightweight 100g design with full support for OEM customization.
  • Brand:

    S4A
  • Item NO.:

    S4A-QR702
  • Specifications
  • Wiring Diagram
  • Package

S4A-QR702 QR Code Access Card Reader


The S4A-QR702 is a high-performance USB QR Code Access Card Reader designed for seamless plug-and-play access control integration. Powered by USB DC 5V with HID keyboard output, it supports fast scanning of 2D QR codes and barcodes as well as dual-frequency RFID cards (125KHz ID + 13.56MHz IC). Compact and efficient, the S4A-QR702 features high-speed card sensing (< 100ms), wide-angle scanning, and OEM customization support for modern security deployment.


Parameter Specification
Model Number S4A-QR702
Product Name QR Code Access Card Reader
Power Supply USB DC 5V
Current Consumption Standby < 30mA; Fill Light ≤ 100mA
Communication Interface USB No-drive / HID Keyboard Output
RFID Frequency 125KHz + 13.56MHz (ID + IC)
Supported Protocols / Cards ISO14443A/B, EM, M1, Desfire, 15693, SONY card, NFC
Scan Type Two-dimensional (2D) QR Code, Barcode
Sensing Distance Card: 3–5 cm | QR Code: 5–30 cm
Card Sensing Speed < 100 ms
Reading Angle 360° Rotation; Elevation ±55°; Deflection ±55°
Scanning Angle 72° (Horizontal), 54° (Vertical), 84° (Diagonal)
Weight 100 g
Operating Temperature -20°C to 60°C
Customization Support OEM Customization

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