How to print barcodes using the Brother RJ4250WB printer

Brother RJ4250WB Specs

Rugged construction (2.1m drop protection) with reinforced parts and moulded rubber housing engineered for improved toughness (IP54 rated out of the box for dust and moisture exposure).
Bluetooth, USB and wireless connectivity.
Fast print speeds of up to 5ips.
Optional extras include: Extra batteries, shoulder strap, in-vehicle/charging cradle, power options, and single battery charger.
Up to 203dpi print resolution.
Smart Li-ion Battery (optional) with industry-leading battery life to last a full shift and indicator for health status.

Long press on a Row
A menu will appear - choose View Barcode
Choose a barcode type of your choice
Press Print
Brother Printer software will show on the screen along with several print options. Copies, Paper size, Color, OrientationsEtc.
Once you have chosen. Press the Yellow Print Icon.

Turn on the printer
Press the down arrow button
WLAN - press OK
Down arrow key to - WPS
Press OK
Press the WPS button on the Router
Then press OK on the printer
WPS Setting will stay on the screen until the set up is complete
WPS
As long as the phone you want to print from is on the same network you can now print directly from with the Orca Scan mobile app

System preferences
Printers & Scanners
Click on the + sign
Two options will be shown for the same printer. (you may need to wait 30sec -1min for both to be shown)
Choose Bonjour.
Click Add.

Once installation is complete:

This example uses Chrome. This will work with most browsers installed on OSX that has a print function.
File - print
Click on More settings File - print
Click on Paper Size drop-down
Click on Manage Custom Sizes
Click Add
Add specified size, remove all non-printable areas (you can adjust this later if needed) and give it a name