1. Introduction
The KEFAR KR-G80 series offers high-performance 2D barcode scanning solutions, available in wired, 2.4G wireless, and Bluetooth configurations. These scanners are designed for efficient and accurate reading of both 1D and 2D barcodes, including those displayed on mobile phone screens. With robust construction and versatile connectivity, the KR-G80 series is suitable for various applications such as retail, warehouse inventory, logistics, and more.
This manual provides detailed instructions for setting up, operating, and maintaining your KEFAR KR-G80 series barcode scanner.
Figure 1: KEFAR KR-G80B Bluetooth 2D Barcode Scanner with Charging Base
2. Setup
The KEFAR KR-G80 series scanners offer multiple connection options. Please follow the instructions below based on your specific model and desired connection type.
2.1. Package Contents
- Barcode Scanner (x1)
- 2.4G Mini Receiver (x1, for wireless/Bluetooth models)
- USB Cable (x1)
- User Manual (x1)
Figure 2: Package contents for wireless/Bluetooth version with charging base
2.2. Wired USB Connection (KR-G80, KR-G80W, KR-G80B)
This method is plug-and-play and requires no drivers or software installation.
- Connect the USB cable to the Type-C slot on the bottom of the scanner.
- Plug the other end of the USB cable into an available USB port on your computer or cash register.
- The scanner will be automatically recognized by your system and is ready for use.
Figure 3: Scanner bottom view with Type-C slot
Video 1: Demonstration of USB Cable Transmission
2.3. 2.4G Wireless Connection (KR-G80W, KR-G80B)
This connection uses a dedicated 2.4G mini receiver for wireless communication.
- Plug the 2.4G mini receiver into an available USB port on your computer.
- Ensure the scanner is charged.
- The scanner should automatically pair with the receiver. A green flashing LED indicator on the scanner signifies successful code recognition.
Figure 4: 2.4G Wireless Connection
Video 2: Demonstration of 2.4G Wireless Transmission
2.4. Bluetooth Connection (KR-G80B)
This connection allows pairing with Bluetooth-enabled devices like smartphones or tablets.
- Ensure the scanner is charged and powered on.
- On your device (e.g., smartphone), go to Bluetooth settings and enable Bluetooth.
- Search for available devices. The scanner should appear as "KR-G80B".
- Select "KR-G80B" to pair. Once connected, the blue LED indicator on the scanner will be constant bright.
Video 3: Demonstration of Bluetooth Transmission
3. Operating Instructions
3.1. Scanning Modes
The scanner supports both manual handheld scanning and automatic continuous scanning modes.
- Manual Handheld Scan Mode: Press the trigger button to scan each barcode individually.
- Automatic Continuous Scan Mode: The scanner continuously scans without needing to press the trigger. This mode is ideal for high-volume scanning.
To switch between modes, scan the appropriate configuration barcode provided in the full user manual. For example, to activate continuous read mode, scan the following QR code:
Figure 5: Continuous Read Pattern QR Code
3.2. Indicator Lights and Prompts
- Blue Constant Bright: Standby state.
- Green Flashing: Code recognition success.
- Vibration: The scanner provides a vibration reminder upon successful scan (for models with built-in vibration motor).
- Buzzer: An audible beep confirms a successful scan.
Figure 6: Two-color LED Indicator
3.3. Scanning Barcodes
- Point the scanner's window at the barcode you wish to scan.
- Ensure the barcode is within the scanner's field of view and the red aiming line (if present) crosses the barcode.
- Press the trigger (or allow automatic scanning in continuous mode).
- A successful scan will be indicated by a green flash, a beep, and/or a vibration. The decoded data will be transmitted to your connected device.
Figure 7: Scanning Mobile Phone Screen Codes
3.4. Battery and Charging
The wireless and Bluetooth models feature a built-in 1800mAh Li-Ion battery, providing up to 72 hours of continuous scanning or 100,000 scans on a full charge. Charge the scanner using the provided USB Type-C cable.
Figure 8: Battery Life Indication
4. Maintenance
4.1. Cleaning
- Regularly clean the scanner's window and exterior with a soft, lint-free cloth.
- For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner.
- Do not use harsh chemicals, solvents, or abrasive materials, as these can damage the scanner.
4.2. Storage
- Store the scanner in a cool, dry place away from direct sunlight and extreme temperatures.
- When not in use for extended periods, ensure the battery is partially charged (around 50%) to prolong its lifespan.
4.3. Durability
The scanner is constructed with PC ABS material, designed to withstand impacts from falls of up to 1.5 meters onto a cement floor.
Figure 9: Composite Fuselage Anti-seismic and Anti-fall Design
5. Troubleshooting
If you encounter issues with your KEFAR KR-G80 series scanner, please refer to the following common problems and solutions:
- Scanner not connecting: Ensure the USB cable is securely connected, the 2.4G receiver is plugged in, or Bluetooth is properly paired. Check the scanner's battery level.
- No data transmitted after scanning: Verify the scanner is correctly connected to your device. Ensure the application on your computer/device is ready to receive input (e.g., a text field is active).
- Unable to scan certain barcodes: Check if the barcode type is supported by the scanner (refer to Specifications). Ensure the barcode is clean, undamaged, and well-lit. Adjust the scanning distance.
- Slow scanning performance: Ensure the scanner's lens is clean. If using wireless, check for interference or move closer to the receiver/device.
- Scanner not turning on: Charge the scanner for at least 30 minutes. If it still doesn't turn on, contact support.
For advanced settings like prefix/suffix configuration or COM port settings, please contact KEFAR support for the full manual.
6. Specifications
| Feature | Description |
|---|---|
| Product Model | KR-G80 |
| Product Size | 157mm × 70mm × 112mm |
| Net Weight | 175g |
| Scanning Principle | CMOS Image Decoding |
| Scanning Light Source | Natural Light + LED |
| Fill Light Mode | LED Lights |
| Interface Type | USB / 2.4G Wireless / Bluetooth |
| Cable Line Length | Straight 1m |
| Reading Accuracy | 1D code ≥ 3MIL, 2D code ≥ 5MIL |
| Scan Speed | 200 scans/second |
| Optical Resolution | 600*1200 |
| Depth of Scan Field | 10-800 mm |
| Decode Mode | By trigger or continuous mode |
| Decode Error Rate | Less than 1/8 million |
| Prompt Mode | Vibration, buzzer, indicator light |
| Battery Capacity | 2000mAh (Li-Ion) |
| System Support | WinXP, Win7/8/10, Android, macOS, Linux |
| Supported 1D Symbologies | EAN-13, EAN-8, UPC-A, UPC-E, ISSN, ISBN, CodeBar, Code 128, Code93, ITF-14, ITF-6, Interleaved 2 of 5, Industrial 2 of 5, Matrix 2 of 5, GS1 DataBar(RSS), Code 39, Code 11, MSI-Plessey |
| Supported 2D Symbologies | QR Code, Data Matrix, PDF417, Micro QR, Aztec (Supports mobile phone screen code reading) |
| Certifications | CE, FCC, RoHS |
Figure 10: Performance Parameters
7. Warranty and Support
7.1. Warranty Information
All KEFAR products come with a warranty of not less than 12 months, with some models extending up to 24 months. Spare parts may be provided for bulk orders for local maintenance.
7.2. Technical Support
For any inquiries or technical assistance, please contact KEFAR support. Professional CRM management ensures fast responses to customer queries. Our online service operates 7 days a week, responding within 12 hours during working days and 24 hours during rest days.
Contact Information:
- Email: ranny001@aliyun.com
- Mobile/Whatsapp: +86 13711339201
Figure 11: Warranty and After Sales Service
8. User Tips
- Optimal Scanning: For best results, ensure the barcode is flat, well-lit, and the scanner is held at an appropriate distance (10-800mm) to allow the red aiming line to cover the entire code.
- Screen Scanning: The KR-G80 series is capable of scanning barcodes directly from digital screens. Ensure the screen brightness is adequate for successful reading.
- Battery Management: For wireless models, regularly check the battery level. A full charge provides extensive usage, but charging before critical tasks is recommended.
- Connectivity Modes: If experiencing issues with one connection type (e.g., Bluetooth), try switching to another available mode (2.4G wireless or wired USB) to diagnose the problem.
- Configuration Codes: Keep the user manual or a digital copy of the configuration barcodes handy for quick changes to scanning modes or other settings.
