The GM861S is a high-efficiency barcode reader module designed for embedded systems, kiosks, and automation projects. It supports both 1D and 2D codes including QR, PDF417, and Data Matrix, with fast decoding and low power consumption.

Specifications

• Sensor Type: CMOS
• Scan Resolution: 640 × 480 pixels
• Supported Code Types:
  - 1D: EAN-13, EAN-8, UPC-A, UPC-E, ISBN, Code 128, Code 39, ITF, CodaBar, MSI, GS1
  - 2D: QR Code, PDF417, Data Matrix
• Interface: TTL-232 (UART) / USB
• Operating Voltage: 3.3 V DC
• Operating Current: ≤ 70 mA
• Standby Current: ≤ 6 mA
• Startup Time: ≤ 250 ms
• Prompting Mode: LED indicator (green light on successful read)
• Reading Distance: 5–30 cm
• Minimum Contrast: > 25%
• Reading Accuracy: ≥ 10 mil
• Scan Angle:
  - Roll: 360°
  - Pitch: ±65°
  - Yaw: ±65°
• Viewing Angle:
  - Horizontal: 67°
  - Vertical: 53°
• Package Includes: GM861S module + 6-pin serial cable
• SDK: Free SDK and user manual available

Features

• Compact and lightweight for embedded integration
• Fast decoding of 1D and 2D barcodes on paper, screens, and labels
• Dual interface (UART/USB) for flexible system compatibility
• LED feedback for successful scans
• Ideal for kiosks, vending machines, access control, and inventory systems
• Common use cases:
  - Embedded barcode scanning in automation systems
  - QR code access control and ticketing
  - POS terminals and inventory tracking
  - DIY projects and educational kits