
BYTEUP D12Pro Bluetooth Label Maker

Overview
The BYTEUP D12Pro is a Bluetooth thermal label printer that:
- Connects to smartphones via app
- Prints labels without ink (thermal technology)
- Supports multiple fonts, icons, and templates
- Please read the instruction manual carefully before using the product.
Specifications
| Specification | Details |
|---|---|
| Model | D12Pro |
| Product Type | Bluetooth Label Maker |
| Printing Method | Thermal printing (no ink required) |
| Connectivity | Bluetooth |
| Compatible Devices | Android & iOS smartphones |
| Print Width | Typically 12–15 mm |
| Resolution | Approx. 203 dpi |
| Battery Type | Rechargeable lithium battery |
| Charging Port | USB Type-C / Micro-USB |
| Supported Media | Thermal label rolls |
Item Checklist

Product Introduction
- Power button
- Press and hold 2 seconds to turn on/off.
- Reset key
- When the printer is not responding, try inserting the needle into the reset hole until the power indicator light goes off and the device shuts down. If needed,press and hold for 2 seconds to turn on the device.
- Type-C Port
- Charged with mobile phone charger or power bank. (Input Power:5V— 2A)

Charging Introduction
- Please connect one end of the USB cable to the device and the other end to a SV= 2A adapter or computer USB port for charging;
- Charge time: about 3 hours;
- We recommend you to use mobile phone chargers for charging;
- If not used for a long time, please charge once every 3 months to avoid long-term natural loss of lithium battery.

NOTE
- Working environment: Use at the ambient temperature of 5°C~40°C;
- Caution! This product doesn’t contain a power adapter. If consumers use a power adapter for a power supply, please buy a power adapter that has obtained CE and FCC certification and meets the standard requirements. The output specifications of the adapter shall comply with 5V=-2A.
How to Use
Usage Overview

APP Download
- Search for [AiYin] on Google Play or App Store.

- Scan the following QR code to download the app.

- This product needs to be connected to the printer in the App
- Due to the requirements of the mobile phone system, the Android mobile phone will use the user’s geographic location when connecting,so that the user needs to turn on the GPS and confirm the authorization.
- This app only supports phones with Android 7.0 or iOS 11.0 or above systems.
Printer Startup
- Per button of the printer
- for 2 seconds to turn on the printer.

Power Button Description
| Button | Functi0ns
|
|
Power button |
Hold for 2 seconds, Power on/off |
| Press twice, Time printing | |
| Print d1agnost1c page and the QR code to Press three connect the printer with smart phone App |
Indictor Light
| Light | Functions |
| Light steady on | Bluetooth connected |
| Light flashing slowly | Bluetooth disconnected |
| Green light on | Normal use status /Full charged |
| Red light on | Cover opened/Nopaper/Over-heat |
| Yellow light on | Low battery,please charge in time. |
| Yellow light flashing quickly | Charging |
NOTE
- Auto power off: The printer will automatically power o ffafter 20 minutes without operation.You can set the timer in the App.
Connected Printer
- Open AiYin App.
- Click to search for printer Bluetooth and connect. or scan thedevice connection QR code by printing from printer after double clicking the power button.

NOTE
- When connecting the device in the App, please make sure that your printer is turned on and the Bluetooth of your mobile phone is turned on
- Due to the requirements of the mobile phone system,the Android mobile phone will use the user’s geographic location when connecting, so that the user needs to turn on the GPS and confirm the authorization.
- Please pair Bluetooth in the app, do not pair Bluetooth in the phone settings.
Installation Consumables
Paper Installation Guide
- Open cover.
- Put paper in.

- Close the cover.

Edit Print
- Open the App and select the correct paper size.
- Select printing method for editing.

- Edit printing content.
- Click the print after editing.

Clean the Printer Head
- Please turn offthe printer and open the printer cover and take out the paper.
- Dip a cotton cloth or cotton swab with medical alcohol, and wipe gently along the center to the periphery of the printer head.
- After cleaning the printer head, do not use the printer immediately. Please wait for 1 to 2 minutes, and then use the printer after the alcohol has completely evaporated.
NOTE
- Please do not directly touch the printing head to avoid damage. Especially,do not directly touch the printing head immediately after printing to avoid overheating and scalding.
FCC Statment
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules: These limits are designed to provide reasonable protection against harmful interference in aresidential installation. This equipment generates uses and can radiate radio frequency energy and,if not installed and used in accordance with the instructions.may cause harmful interference to radio communications. However,there is no guarantee that interference will not occur in a particular installation.If this equipment does cause harmful interference to radio or television reception,which can be determined by turning the equipment o ffand on,the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receive[
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.
ICC warning
Radio Standards Specification RSS-Gen, issue 5-English:
This device contains licence-exempt transmitter(s)/receiver(s)that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation issubject to the following two conditions:
- This device may not cause interference.
- This device must accept any interference, including interference that may cause undesired operation of the device.
RF exposure statement:
- The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.
Warranty Card
- Return
- Exchange
- Repir
|
User Info |
Phone: |
| Address: | |
|
Product Info |
Purchase date: |
| Product order number: | |
| Product Serial Number: | |
| Requirements of return
/repair |
Reason description: |
|
Maintenance records |
Failure condition: Maintenance person: |
| Handling situation: Delivery date: | |
|
Maintenance ticket number: Delivery date: |
Documents / Resources
![]() | D12Pro Bluetooth Label Maker |
References
- User Manualmanual.tools
