Set up your Qashier Soundbox in QashierHQ so it announces PromptPay payments for the right store: give it a store name, enter its serial number and set the text shown on its standby screen.
Applies to: Thailand · QashierHQ · Qashier Soundbox (PromptPay) · a QashierHQ login with access to Settings.
Before you start
Have the Soundbox's serial number ready. It is printed on the label on the back of the device.
Connect the Soundbox to the internet first. See How to connect Qashier Soundbox to WiFi or 4G (SIM card).
If you have not signed up for a Soundbox yet, see [TH] How to Sign Up for Qashier Soundbox (Standalone).
Configure the Soundbox in QashierHQ
Log in to QashierHQ.
Click the gear icon (Settings) at the top right. On a phone, open your profile menu at the top right and tap Settings.
In the Settings menu on the left, under Devices, click Soundbox Settings.
At the top of the page, choose the store, then choose the Soundbox under SoundBox Store.
In Edit Soundbox Store Name, type the name you want to see for this Soundbox in your QashierHQ sales reports. This field is required.
In Soundbox Serial Number, type the serial number from the label on the back of the device. Avoid changing this field unless you are replacing the device, as a wrong serial number stops the Soundbox from working.
In Terminal Standby Display Line 1, Terminal Standby Display Line 2 and Terminal Standby Display Line 3, type the text shown on the Soundbox screen while it is idle. Line 1 is required; each line can hold up to 20 characters.
Leave Soundbox Language as ไทย (Thai), the only option for Thailand.
Click Save.
The Soundbox store name (red box) and the standby display text (orange box) in Soundbox Settings.
The serial number on the label on the back of the Soundbox.
Enter the serial number in the Soundbox Serial Number field.
What you should see
The Soundbox shows your standby text on its screen and announces each PromptPay payment for that store. See [TH] How to Use Qashier Soundbox (Dynamic PromptPay QR).
The store name you entered appears against the Soundbox's sales in QashierHQ reports.
While the serial number is empty, a red dot shows on the Settings icon and on Soundbox Settings. It disappears after you save a serial number.
If something goes wrong
Symptom | Likely cause | What to do |
The Soundbox screen shows an error message (see below) | The serial number in QashierHQ is missing or does not match the device | Re-enter the serial number from the label on the back of the device in Soundbox Serial Number and click Save |
Red dot on the Settings icon | A Soundbox has no serial number saved | Open Soundbox Settings, pick each SoundBox Store and fill in the serial number |
Standby text does not update, or no payment announcements | The Soundbox is offline | Check its Wi-Fi or SIM connection: How to connect Qashier Soundbox to WiFi or 4G (SIM card) |
Soundbox Settings is not listed under Devices | No Soundbox is linked to the selected store, or your login has no Settings access | Choose the correct store, or contact support |
The error shown on the Soundbox when its serial number is missing from QashierHQ or entered incorrectly.
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Last verified: 25 Sep 2026 · Markets: TH