This manual provides comprehensive instructions for the safe and efficient operation of your KOAMTAC KDC350Ci-G6SR-3K-R2-WFG 2D Imager Bluetooth Barcode Scanner. Please read this manual thoroughly before using the device to ensure proper functionality and to prevent damage.
The KOAMTAC KDC350Ci-G6SR-3K-R2-WFG is a versatile 2D imager Bluetooth barcode scanner designed for efficient data collection. It features a built-in display and keypad for interactive data collection and a rechargeable battery for extended use.

Figure 1: Front view of the KOAMTAC KDC350Ci-G6SR-3K-R2-WFG barcode scanner, showing the display, scan button, and navigation keys.
Before initial use, fully charge the KDC350. Connect the device to a USB power source using the provided USB cable. The charging indicator light will illuminate during charging and turn off when fully charged.
The KDC350 supports various data collection modes. Refer to the device's on-screen menu for options such as:
The integrated keypad and display allow for navigation through menus, manual data entry, and verification of scanned information. Use the navigation keys (left/right arrows) and the 'SCAN' button (often acts as 'Enter' or 'Select') to interact with the device's interface.
To maintain optimal performance, keep the scanning window and device exterior clean. Use a soft, lint-free cloth. For disinfection, the KDC350 is safe to use with:
Do not immerse the device in liquid. Avoid using abrasive cleaners or solvents.
The KDC350 features an easy-to-replace rechargeable battery. Refer to the device's specific instructions for battery compartment access and replacement procedures. Use only KOAMTAC approved replacement batteries.
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Battery is depleted. | Charge the device using the USB cable. |
| Cannot connect via Bluetooth. | Device not in pairing mode; Host device Bluetooth off; Out of range. | Ensure KDC350 is in pairing mode. Verify host device Bluetooth is enabled. Move devices closer. |
| Barcode not scanning. | Barcode damaged/unreadable; Incorrect scanning angle; Scanning window dirty. | Try scanning a different barcode. Adjust scanning angle. Clean the scanning window. |
| Scanned data not appearing on host device. | Bluetooth connection lost; Incorrect data transmission mode. | Verify Bluetooth connection. Check KDC350's data transmission mode settings (e.g., Keyboard Wedge). |
If the problem persists, please contact KOAMTAC support.
For warranty information and technical support, please refer to the official KOAMTAC website or contact their customer service department. The product includes FREE SDK with technical support from KOAMTAC engineers and development staff.
Manufacturer: KOAMTAC Inc.
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