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Confirm your Merchant Number for a Pax S300 and D210


  • Pax S300 and D210 terminal


  • Hold down the blue function (FUNC) key while simultaneously pressing the 1 key or on some models press and hold the green button while simultaneously pressing the 1 key.
    • This will take you to the Main Menu. If you are in the Function Menu it is the wrong menu screen.
  • The terminal will prompt you to enter in the device’s password. 
    • the default password is the current date in the format of mmddyyyy
  • Press the green enter key to confirm the password.
  • Scroll to down and Select Hosts Settings.
  • Enter in the password again and press green enter key.
  • Select Host Parameters
  • Select Merchant Number

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