1. Introducció
The NIIMBOT B21 Label Printer is a portable, inkless thermal label maker designed for efficient organization in various settings, including home, business, and office environments. Its compact size and Bluetooth connectivity make it highly versatile for creating custom labels for a wide range of items.

Image: The NIIMBOT B21 Label Printer in black with gold accents, shown alongside rolls of labels and a labeled candle, demonstrating its application in home and business organization.
2. Parts i components
Familiarize yourself with the key components of your NIIMBOT B21 Label Printer:
- Botó d'encesa: Used to turn the device on/off and initiate printing.
- Indicador LED: Displays device status (e.g., power on, charging, error).
- Ranura de sortida de paper: On emergeixen les etiquetes impreses.
- Paper Cover Switch: Lever on the side to open the paper compartment.
- Port de càrrega tipus C: Per carregar la bateria interna.
- Adjustable Paper Slot: Accommodates various label widths (0.8 to 2 inches).

Imatge: Un primer pla view of the NIIMBOT B21 Label Printer, highlighting its compact design and the internal rechargeable battery, emphasizing its portability.
3. Configuració
3.1 Inserting the Label Paper
Properly loading the label roll ensures smooth printing. Follow these steps:
- Open the paper cover by pressing the lever on the side of the printer.
- Adjust the paper slot to match the width of your label roll.
- Place the label roll onto the spindle, ensuring the labels feed from underneath and the tip of the tape is facing up.
- Make sure 2-5mm of paper remains outside the machine.
- Tanqueu la coberta de paper fermament fins que encaixi al seu lloc.
3.2 Downloading the NIIMBOT App
The NIIMBOT app is essential for designing and printing labels. It is compatible with Android and iOS devices.
- Cerca "NIIMBOT" in your device's App Store (iOS) or Google Play Store (Android).
- Download and install the official NIIMBOT application.

Image: The NIIMBOT B21 Label Printer shown next to a smartphone displaying the NIIMBOT app interface, illustrating the wireless connection setup.
3.3 Pairing the Label Maker with Your Mobile Device
Connect your printer to the app via Bluetooth for seamless operation:
- Press and hold the Power Button on the printer for 3 seconds to turn it on. The green LED indicator will flash.
- Open the NIIMBOT app on your smartphone or tablet.
- In the app, click "Unconnected" in the upper right corner to search for devices.
- From the list of discovered Bluetooth devices, tap "B21-C2BE123030129" (or similar B21 model ID) to connect.
- If prompted for a PIN, enter "0000" or "1234".
- The machine will automatically align the paper and recognize its size.
4. Instruccions de funcionament
4.1 Creating a Label Design
The NIIMBOT app offers extensive customization options for your labels:
- From the app's main screen, select a template or start a new design.
- Double-click the text box to edit the content. You can adjust font size, style, spacing, and alignment.
- Add elements such as images, icons, barcodes, QR codes, and tables using the provided tools.
- The app features over 30 fonts, 100+ borders, and 1500+ symbols to enhance your designs.

Image: The NIIMBOT B21 Label Printer producing a custom label, demonstrating the high-quality output achievable through the NIIMBOT app's design features.
4.2 Impressió d'etiquetes
Once your design is complete, you can print your labels:
- After editing, tap the "Print" button to enter the print interface.
- Adjust the number of copies and print density as needed.
- Confirm the print preview and tap "Print" to start printing.
4.3 Aplicació d'etiquetes
The self-adhesive thermal labels are easy to apply to various surfaces:
- Carefully peel the printed label from its backing.
- Enganxeu l'etiqueta a una superfície neta i seca.
- Premeu fermament per assegurar una bona adherència.

Imatge: Un collage d'imatges que mostrenasing diverse applications of NIIMBOT labels, including organizing pantry items, labeling packages, and tagging jewelry, highlighting its versatility for home and business use.
5. Manteniment
To ensure the longevity and optimal performance of your NIIMBOT B21 Label Printer, follow these maintenance tips:
- Neteja: Regularly wipe the print head with a soft, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Emmagatzematge: Guardeu la impressora en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- Cura de la bateria: Charge the built-in 1200mAh rechargeable battery regularly, even if not in frequent use, to maintain battery health. Avoid fully discharging the battery for extended periods.
- Emmagatzematge d'etiquetes: Store label rolls in their original packaging to protect them from dust and moisture.
6. Solució De Problemes
If you encounter issues with your label printer, refer to the following common solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| La impressora no s'encén | Bateria baixa; el botó d'engegada no s'ha premut prou estona | Charge the printer for at least 4 hours; Press and hold the power button for 3 seconds. |
| Labels not printing clearly | Print head is dirty; Low print density setting | Clean the print head; Increase print density in the app. |
| L'aplicació no es connecta per Bluetooth | Bluetooth is off; Printer is out of range; App issue | Ensure Bluetooth is enabled on your device; Move printer closer; Restart app/device. |
| Etiquetes que no s'alimenten correctament | Label roll inserted incorrectly; Paper slot not adjusted | Re-insert label roll with tip facing up; Adjust paper slot to fit label width snugly. |
7. Especificacions
- Marca: NIIMBOT
- Model: B21
- Connectivitat: Bluetooth
- Tecnologia d'impressió: Tèrmica (sense tinta)
- Velocitat màxima d'impressió (monocrom): 60 ppm
- Supported Label Width: 0.8 a 2 polzades (20-50 mm)
- Bateria: Bateria recarregable de 1200 mAh
- Port de càrrega: Tipus-C
- Pes de l'article: 300 grams (0.66 lliures)
- Dimensions del producte: 2.36 "P x 5.1" W x 3.54" H
- Tipus de controlador: Android, iOS (via NIIMBOT App)
8. Garantia i Suport
NIIMBOT provides 18 months of warranty service for the B21 Label Printer. If your label maker is broken, won't start, or requires repair, please contact NIIMBOT customer service for assistance.
For further support, visit the official NIIMBOT Store on Amazon: NIIMBOT Store





