The Brother RJ-4230B is a high-performance 4" mobile printer, purpose-built for demanding environments. Combining industry-leading print speeds with robust durability, this direct thermal printer is housed in a compact yet rugged design — making it ideal for on-the-go professionals in logistics, field service, public safety, and retail.
Designed to keep your workforce mobile and productive, the RJ-4230B features integrated Bluetooth connectivity, an intuitive LCD screen, and easy-to-load media rolls for seamless, efficient operation. With support for ZPL II, CPCL, and Brother ESC/P printer languages, it offers excellent compatibility with legacy systems, allowing you to upload and manage templates directly from your PC.
Built to perform in tough conditions, the RJ-4230B boasts an IP54 rating and withstands drops of up to 2.1 metres. Whether mounted in a vehicle or used in the field, this printer delivers reliable performance when it matters most. Its optional battery eliminator makes it the perfect choice for vehicle-mounted applications in public sector and emergency service settings.
Linerless media compatibility adds an eco-conscious edge, reducing waste while enhancing workflow flexibility. From labels and tags to receipts, invoices, and quotes — the RJ-4230B prints everything you need, wherever your work takes you, all without relying on a network connection.
- Rugged 4" direct thermal mobile printer with Bluetooth
- Industry-leading print speeds in a compact design
- IP54 certified with 2.1m drop protection
- Compatible with ZPL II, CPCL, and Brother ESC/P
- Integrated LCD display and fast media loading
- Supports linerless media for reduced waste
- Ideal for vehicle-mount use with optional battery eliminator

In stock at our approved suppliers. Delivery within 2 – 5 working days.

In stock at our approved suppliers. Delivery within 2 – 5 working days.

Need Help?

Need Help?

In stock at our approved suppliers. Delivery within 2 – 5 working days.

Need Help?


In stock at our approved suppliers. Delivery within 2 – 5 working days.


In stock at our approved suppliers. Delivery within 2 – 5 working days.

In stock at our approved suppliers. Delivery within 2 – 5 working days.


In stock at our approved suppliers. Delivery within 2 – 5 working days.

In stock at our approved suppliers. Delivery within 2 – 5 working days.

In stock at our approved suppliers. Delivery within 2 – 5 working days.

In stock at our approved suppliers. Delivery within 2 – 5 working days.

In stock at our approved suppliers. Delivery within 2 – 5 working days.



For products which are showing as 'in 2-5 working days', these are shipped direct from the manufacturer or supplier and so can be subject to a 2-5 day leadtime.
For items which are 'ordered on request', these are not in stock at the manufacturer or supplier and could be made to order with lead times up to 6 weeks.
If you require any products urgently, please call our sales team to discuss your requirements. Many of our suppliers are able to direct ship on a next working day service for a surcharge.