1. Introduction
Thank you for choosing the Omezizy D520BT Bluetooth 4x6 Shipping Label Printer. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your new thermal label printer. Please read this manual thoroughly before use to ensure optimal performance and longevity of your device.
2. Product Overview
The Omezizy D520BT is an efficient thermal label printer designed for small businesses and personal use. It features both Bluetooth and USB connectivity, offering versatile printing options from various devices and platforms. Its integrated paper box design supports both roll and fanfold labels, eliminating the need for external holders and saving desktop space. With a high print speed of 150mm/s and 203 DPI resolution, it ensures clear and fast label printing.

Image: High Speed Thermal Label Printer. This image illustrates the printer's high-speed capabilities, showing labels being printed quickly and clearly.

Image: Built-in Paper Label Compartment. This image highlights the printer's internal paper compartment, designed to hold label rolls without an external holder.

Image: All-in-one, Two Printing Options. This image demonstrates the two label loading options: internal for roll labels and rear for fanfold labels.
3. What's in the Box
Upon opening your Omezizy D520BT package, please verify that all the following items are included:
- Omezizy D520BT Label Printer
- Power Adapter and Cable
- USB Cable
- Type-C Adapter (for Mac compatibility)
- 4x6 inch Test Labels (30 pieces)
- User Manual

Image: What's in the box. This image displays all the components included in the Omezizy D520BT printer package.
4. Setup
Follow these steps for initial setup:
- Connect Power: Plug the power adapter into the printer and then into a wall outlet.
- Load Labels:
- For Roll Labels: Open the top cover of the printer. Place the label roll into the built-in compartment. Ensure the labels feed smoothly out of the front slot.
- For Fanfold Labels: Feed the fanfold labels from the rear slot of the printer. Ensure they are aligned correctly.
- Connect to Device: Choose your preferred connection method (USB or Bluetooth) as detailed in the 'Connectivity' section.
- Install Drivers/App: For USB connection, install the appropriate drivers for your operating system (Windows, Mac, Chrome OS, Linux). For Bluetooth connection, download the dedicated Omezizy printing app on your Android or iOS device.
- Calibrate Labels: After loading labels, the printer may perform an automatic calibration. If not, refer to the app or driver settings for manual calibration to ensure accurate printing.
5. Operating Instructions
Once the printer is set up and connected, you can begin printing labels:
- Prepare Label File: Download the shipping label from your chosen platform (e.g., USPS, Amazon, Shopify) to your computer or mobile device. Ensure the label is in a printable format (e.g., PDF, JPG).
- Open Printing Software/App: Open the Omezizy printing app on your mobile device or the printer driver interface on your computer.
- Load Label File: Import or open the downloaded label file within the printing software/app.
- Select Printer: Ensure the Omezizy D520BT is selected as your active printer.
- Adjust Settings (if necessary): Verify label size and orientation settings match your physical labels. The printer supports label widths from 1 to 4.6 inches.
- Print: Initiate the print command. The printer will automatically detect the label size and print at a speed of up to 150mm/s.

Image: Bluetooth Makes Printing Easier. This image demonstrates the convenience of printing labels wirelessly via Bluetooth from a mobile device.
6. Connectivity
The Omezizy D520BT offers flexible connectivity options:
6.1. Bluetooth Connection
The printer supports Bluetooth connectivity for Android, iOS, and Mac/Windows systems. For mobile devices, you must connect via the dedicated Omezizy printing app. For Mac and Windows, ensure the printer drivers are installed and follow the app's instructions for Bluetooth pairing.
6.2. USB Connection
Connect the printer to your computer using the provided USB cable. It is compatible with Windows, Mac, Chrome OS, and Linux systems. Ensure the correct drivers are installed for your operating system to enable printing via USB.

Image: Support Bluetooth Wireless and USB Connection. This image visually explains the printer's compatibility with various operating systems via both Bluetooth and USB connections.
7. Platform Compatibility
The Omezizy D520BT is compatible with all major sales and shipping platforms, making it ideal for online businesses. These include, but are not limited to:
- USPS
- UPS
- eBay
- Etsy
- Shopify
- Amazon
- PayPal
- Poshmark
- FedEx
- DHL
- ShipStation
- And many more.
Note: Always download the label from the respective platform first, then upload it to the Omezizy printing app or software for printing.

Image: Compatible with All Main Platforms. This image displays logos of various shipping and e-commerce platforms compatible with the printer.
8. Label Types and Sizes
The Omezizy D520BT thermal label printer supports a wide range of label widths, from 1 inch to 4.6 inches (25.4mm to 117mm). It is designed to work with standard thermal labels, including 4x6 inch shipping labels, as well as smaller labels for various applications. The printer can accommodate both roll labels (loaded internally) and fanfold labels (fed from the rear slot).

Image: Suitable for Different Uses. This image illustrates various label sizes and types that can be printed, from 4x6 shipping labels to smaller product labels.
9. Maintenance
Regular maintenance ensures the optimal performance and extends the lifespan of your printer:
- Cleaning the Print Head: Use an alcohol swab or a specialized print head cleaning pen to gently wipe the print head. Do this regularly, especially if print quality degrades. Ensure the printer is off and cooled down before cleaning.
- Cleaning the Platen Roller: Use a soft, lint-free cloth dampened with alcohol to clean the rubber platen roller. This helps prevent paper jams and ensures smooth label feeding.
- Dust Removal: Keep the printer free from dust and debris. Use a soft brush or compressed air to clean the interior and exterior of the printer.
- Storage: When not in use for extended periods, store the printer in a clean, dry, and cool environment.
- Use Quality Labels: Always use high-quality thermal labels to prevent damage to the print head and ensure clear prints.
10. Troubleshooting
Here are solutions to common issues you might encounter:
| Problem | Possible Cause | Solution |
|---|---|---|
| Printer not responding | Power not connected, USB/Bluetooth not connected, printer off. | Check power connection, verify USB cable or Bluetooth pairing, ensure printer is turned on. |
| Poor print quality (faded, blank lines) | Dirty print head, low-quality labels, incorrect print density settings. | Clean the print head. Use recommended thermal labels. Adjust print density in software/app settings. |
| Labels not feeding correctly or jamming | Labels loaded incorrectly, platen roller dirty, label size not calibrated. | Reload labels correctly, ensuring proper alignment. Clean the platen roller. Perform label calibration. |
| Bluetooth connection issues | Not paired via app, out of range, interference. | Ensure pairing is done through the Omezizy app. Move device closer to printer. Reduce interference from other devices. |
| Printer not recognized by computer | Drivers not installed or outdated, faulty USB cable/port. | Install or update printer drivers. Try a different USB port or cable. |
11. Specifications
| Feature | Detail |
|---|---|
| Brand | Omezizy |
| Model Number | D520BT |
| Printing Technology | Thermal |
| Connectivity Technology | USB, Bluetooth |
| Max Media Size | 4 x 6 inch |
| Print Media | Labels |
| Max Input Sheet Capacity | 100 |
| Max Copy Speed (B&W) | 72 pages per minute |
| Compatible Devices | iOS/Android phones, iPad, Mac OS, Windows, Chrome OS, Linux |
| Max Print Resolution (Color) | 203 dots per inch |
| Paper Size | Paper Width: 1"-4.6" (25.4-117mm) Inches |
| Max Print Resolution (B&W) | 203 Dots Per Inch |
| Color Depth | 1 bit per pixel |
| Duplex Printing | No |
| Max Copies Per Run | 5 |
| Product Dimensions | 17.78 x 21.84 x 17.78 cm |
| Item Weight | 1.9 Kilograms |
| Color | White |
| Form Factor | All-in-one |
| Processor Count | 1 |
| Batteries Included | No |
| Special Features | Bluetooth/USB connection, Mobile/PC compatible, Thermal printing, Inkless, Auto-detection, Smart auto paper return and self-test, Built-in paper box |
| Printer Output | Monochrome |
| Max Monochrome Print Speed | 72 pages per minute |
| Controller Type | Android |
12. Warranty and Support
Omezizy provides lifetime customer support for your D520BT printer. If you encounter any issues or require assistance, please contact our support team through the following channels:
- Phone Support: Available Monday to Friday, 9:00 AM - 5:00 PM EST.
- Email/Live Chat Support: Available Monday to Friday, 7:30 PM - 4:30 AM EST.
Our team can provide assistance via phone calls, email, and remote desktop operations to help resolve your concerns efficiently.




