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The PX400 is able to read/write read/write NFC forum tags 1,2,3,4, Type
MIFARE Classic Tag (full Mifare-ultralight/1k/4k, Mifare Desfire)
8.11 How to use the printer
The PX400 has an embedded thermal printer on the front face. This
printer is able to print receipts based on the application that you are
using in the device.
The printer works with 58mm wide paper rolls.
To replace the roll please remove the upper front cover of the PX400
and insert the new paper roll.