Getting Started



PAX S300 is a payment device which has the ability to read EMV chip cards, NFC, magnetic strips, and it has a keypad for keyed entry. It is both EMV and Point to Point Encryption enabled. The PAX S300 device must have its own connection to the internet, and the point of sale terminal must be able to connect to it over the local network and it must connect with an Ethernet cable to the network. 


  • Cables Required 

    LAN Connection 

    S300 POS Connector Cable

    S300 Power Cord Ethernet Cable 

Product Description


Connecting the terminal

  1. Connect power cable to S300 connector cable (terminal is turned on/off via power connection)
  2. Connect Ethernet cable to red LAN port on S300 POS connector cable
  3. Connect other end of Ethernet cable to router.

Main Menu Options

To access terminal’s menu press and hold Function key and key 1 simultaneously. The items available in the main menu are :

  1. Display Transaction : Review and Find transactions
  2. Merchant Settings : Set security, authorization, Set batch time, and Set additional prompts
  3. Operation settings : Buzzer Setup, Set operation mode, Halo Setup,
  4. Hosts Settings :View or modify host parameters, host URL parameters, and Auto Dial Setup
  5. System Settings :Time & Date, Set working Mode, key injection, App management, etc.
  6. Communication :Configure communication parameters and settings

Display Transaction

This menu contains two different functions. They are :

  • Review
  • Find

Merchant Settings

This menu contains four different functions that can be changed manually, if necessary. They are:

  • Authorizations
  • Security Settings
  • Merchant Fee
  • Credit Surcharge
  • Set Batch Time
  • Additional Prompts

Operation settings

This Menu has three options that can be enabled or disabled, manually through the terminal. They are:

  • Buzzer Setup
  • Operation Mode
  • Screen Back light
  • Halo Setup
  • Peripherals
  • Language Settings

Hosts Settings

This menu allows you to view/edit the Host Parameters, Host URL parameters, and set the Auto Dial parameters.

  • Hosts Parameters
  • Host URL Params
  • Auto Dial Setup
  • Host Register
  • Batch Close
  • EMV Param Download

System Settings

This menu consists of different functions that can be changed manually.

  • Date/Time Setup
  • Batch Number
  • Working Mode
  • Database
  • Keys Injection
  • App Management
  • TDES Keys Injection
  • POS Register


This Menu has following sub-menus pertaining to communication. These parameters affect communications during authorization and batching only. The following features are part of the Communication Menu:

  • Main Communication
  • Backup Comm.
  • Maximum Tries
  • Connect Timeout
  • Receive Timeout
  • Ping Timeout
  • DNS Timeout
  • Dial Parameters
  • LAN Parameters
  • ECR Comm. Type

Keyboard Definitions 

0-9 Key Numbers : Enter any numeric value or press for more than one time to enter characters of alphabet 

CANCEL  : Used to cancel an operation. Access to the Function Menu. 

CLEAR : Erases character under the cursor when editing parameters. 

ENTER : Accepts entered information. Executes the current function. Access to the main application menu. 

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