---
title: "Zeller Integrated EFTPOS (MPay)"
slug: "zeller-integrated-eftpos"
description: "Learn about Zeller Integrated EFTPOS (MPay) integration with marlin GTX trusted automotive and mechanical workshop software."
updated: 2026-10-29T06:14:58Z
published: 2026-10-29T06:14:58Z
canonical: "help.megabus.com.au/zeller-integrated-eftpos"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.megabus.com.au/llms.txt
> Use this file to discover all available pages before exploring further.

# Zeller Integrated EFTPOS (MPay)

**Marlin GTX** enables card payments on Zeller terminals using integrated EFTPOS.

Megabus offer **Zeller EFTPOS integration** as part of our M-Pay services.

Each computer that takes Zeller payments is **paired** with a Zeller terminal.

When a transaction is finalised, the **Zeller payment window** opens over GTX.

To enable Zeller Integrated EFTPOS, please [contact the Megabus Support Team](https://www.megabus.com.au/support).

See [https://www.myzeller.com/au/megabus-partnership](https://www.myzeller.com/au/megabus-partnership) for mor einformation.

## Setting Up Zeller

**To set up Zeller (once enabled):**

- Go to **System > Options**
- Click the **Data Entry Options** tab
- Find the **Integrated EFTPOS** section
- Click the **Setup Zeller** button

The **Zeller setup for GTX** window opens when the extraction completes.

It has two parts:

- **[Turning on Zeller](/gtx/docs/zeller-integrated-eftpos#turning-on-zeller)**
- **[Pairing PCs](/gtx/docs/zeller-integrated-eftpos#pairing-pcs)**

### Turning On Zeller

**To turn on Zeller:**

- Select the **Users with a Zeller terminal** (computer names that will be taking payments using Zeller)
- Enter the **Merchant fee (%)** (provided by Megabus)
- Click **Turn on Zeller**

Once Zeller is turned on, click **Next**.

## Pairing PCs

The installer then lists the **pairing steps** to complete on each PC.

To pair each computer:

- Close and **reopen** GTX
- Go to **System > Options**:
  - Select the **Data Entry Options** tab
  - Click **Pair**
- **Log in** with your Zeller account
- When asked to name the PC, enter its **Windows PC name**:
  - The name of the **computer being used** should be shown
  - **For other computers:** search the Start menu for "PC name" and open "View your PC name"; it shows as the "Device" name
- Select the Zeller terminal that will be used with that computer:
  - Terminal names are maintained in the Zeller portal
  - Terminals that are already paired show a green label
  - Pairing with another computer replaces the original pairing
- Start a [payment](/gtx/docs/payments) in GTX:
  - Check the Zeller terminal **asks for the card**
  - You can **cancel** it after that

Mark each user in the installer as either **Worked** or **[Failed](/gtx/docs/zeller-integrated-eftpos#handling-failed-users)**.

Once all computers have been paired, click **Finish** below.

:::(Tip) Forgotten passwords are reset in the Zeller dashboard using **Forgot your password**. :::

### Handling Failed Users

Marking a user as **Failed** in the installer reverts any changes made to them.

You can then **try pairing them again later** by repeating the steps above:

### Completing Pairing

The **Device Details** window shows the paired terminal name.

Click the **X** button at the top-right to close the window.

## Taking Test Payments

Once paired, you can take a **test payment** to confirm GTX opens the Zeller payment window and communicates with the terminal.

**To take a test payment:**

- **Finalise** a transaction (for example, a $1.00 test payment)
- Select an **EFTPOS** payment type

The Zeller payment window opens, saying **Waiting for Card or Device to be presented**.

The terminal **prompts for payment**.

An **Approved** message is shown when the payment completes.