The GM805 Series UART USB DC5V Barcode Scanner Reader Module is a compact, high-performance scanning engine designed for embedded systems, Android devices, Arduino projects, POS terminals, and IoT automation. The series includes two models — GM805-S and GM805-L — with the only difference being the lens and its reading distance:

• GM805-S: 5–30 cm

• GM805-L: 7–50 cm (actual range depends on barcode size and content)

Both models feature a powerful 640×480 CMOS imaging sensor, high-speed decoding, and the ability to read 1D barcodes and 2D codes such as QR, Data Matrix, PDF417, Aztec, Micro QR, and Micro PDF417.

The GM805 series uses an advanced decoding algorithm developed from image-recognition technology, enabling fast scanning even on damaged, distorted, low-contrast, or screen-based barcodes. With support for both UART TTL-232 and USB, the module integrates seamlessly with Arduino, ESP32, STM32, Raspberry Pi, kiosks, vending machines, robotics, inventory systems, and Android OTG applications.

Key Features

• High-performance 1D & 2D barcode decoding

• Two lens options: GM805-S (5–30 cm), GM805-L (7–50 cm)

• USB & UART TTL-232 dual interface

• Fast image-based decoding algorithm

• Reads barcodes from paper or screens

• Compact size: 28 × 20 mm

• Ultra-low standby power: ≤6 mA

• Built-in buzzer + LED indicator

• Supports Android (USB-OTG), Arduino, and embedded platforms

Technical Specifications

Performance

• Sensor: CMOS

• Scan Resolution: 640 × 480

• Illumination: White LED

• Indicator Light: Blue LED

Supported Barcode Types

1D: EAN-13, EAN-8, UPC-A, UPC-E, ISSN, ISBN, Code 128, Code 93, Code 39, Code 11, ITF-14, ITF-6, Industrial 2 of 5, Matrix 2 of 5, MSI-Plessey, GS1-Databar, GS1-Composite
2D: QR Code, Data Matrix, PDF417, Micro QR, Micro PDF417, Aztec

Reading Distance

• GM805-S: 5–30 cm

• GM805-L: 7–50 cm

Additional Specs

• Contrast: >25%

• Scan Angle: Roll 360°, Pitch 65°, Yaw 65°

• Viewing Angle: 67° (H), 53° (V)

• Accuracy: ≥10 mil

Mechanical & Electrical

• Interface: TTL-232 / USB

• Size: 28 × 20 mm

• Weight: 2.1 g

• Operating Voltage: 5V

• Operating Current: ≤70 mA

• Startup Time: ≤250 ms

Environmental

• Operating Temperature: −20°C to +60°C

• Storage Temperature: −40°C to +70°C

• Humidity: 5%–95% (non-condensing)

• Drop Resistance: 1.2 m, 50× repeated concrete impact

Downloads & Resources

• 📄 GM805 Series User Manual:
  https://www.dropbox.com/sh/buysgr2aeutuub3/AADsvupiGseFm-6IowMBWGCOa?dl=0

• 🎥 GM805 Operation Video:
  https://youtu.be/bogWHa8kFIY

• 🔧 See our Barcode Scanner Modules Category (internal link to your store)

Package Includes

• 1 × GM805 Series Barcode Scanner Reader Module (GM805-S or GM805-L)