Epson TM-P80 Technical Reference Manual page 64

Pairing method when the security is set to High (from the host)
When the security is set to High and the printer is ready to be paired, perform the following procedure.
1
Search for the printer on the Bluetooth settings screen on the host device.
2
Select the printer you want to pair with.
The printer prints the Passkey.
3
Check that the printed Passkey and the Passkey displayed on the host device match,
and then select "Pairing" on the host device.
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