Every payment, heard instantly.
The cloud push and fleet management platform for payment sound boxes: real-time broadcast, OTA and voice packs, ads, remote operations and open APIs.

- 200K
- Devices, Professional edition
- 50K
- Devices per Standard server
- 3
- Deployment options
- TLS
- Encrypted device links
Busy counters can't watch every screen.
A sound box speaks every payment out loud, so merchants never have to check a phone.
- Missed notifications: phones stay in pockets during a rush
- Fake payment screens: confirmation comes from your gateway
- Noisy places: a dedicated 5 W speaker is heard over the crowd

From scan to sound in four steps.
- 01
Customer scans & pays
Any wallet app scans the merchant's QR code.
- 02
Gateway confirms
Your payment system calls the Cpay IoT Broadcast API.
- 03
Cpay IoT pushes
The message is routed to the right device over MQTT.
- 04
Sound box announces
The amount is spoken and the result is reported back.
See Cpay IoT in two minutes.
From the first import to the millionth broadcast.
Your whole fleet on one screen.
Live KPIs for devices, online rate, payments and broadcast success.
- Task push history with success, failed and pending
- Online status report for 7, 14 or 30 days, exported to Excel

Import, find and group every device.
Status, firmware, voice pack, battery, signal and location are reported automatically and shown in seven tabs of the device detail.
- Three ways to import: Excel, quick entry or a serial range
- Split by store or sub-merchant; move between organizations
- Search by serial, model, group or status; export to Excel

Every payment, heard and recorded.
Paid, received, released and broadcast: every step is timestamped, usually within seconds.
- Transaction record with amount, status and timestamps
- Push request log: payment, QR code, OTA, online, offline
- Channel mapping: your gateway's codes to the voice played

Upgrade thousands of devices in one task.
Firmware and voice packs reach every device over the air. Offline devices catch up the moment they reconnect.
- Upload firmware or a voice pack in Software Manager
- Target by model, group or serial range, with a time window
- Track success or failure per device, with the reason

Remote operations, no site visits.
Change settings in bulk, such as the heartbeat interval or server address, sent as JSON to the devices you choose.
- Reboot, lock or unlock one device or thousands
- Act from a device list or an Excel file
- Every task tracked: pending, delivered, success or failure

Know where every device is, and if it's online.
A value-added service for large fleets.
- Clustered map: click a device for its status and model
- Online rate for the last 14 days, exported to Excel
- Every online and offline event, per device

How Cpay IoT works with your systems.
Secure by design with signed APIs, HTTPS and TLS; clustered MQTT and containerised services scale out with your fleet, and server health is monitored with e-mail alerts.
- 01
Your payment gateway
Sends each payment result, or runs the fleet from your own platform via TMS APIs.
- 02
Cpay IoT platform
Signed Broadcast and TMS APIs, a push and task engine, and the console.
- 03
MQTT service
An EMQX cluster, or AWS, Alibaba Cloud or Tencent Cloud IoT, over TLS.
- 04
Sound boxes
Announce the amount and report the result back.
Multi-level control, secure by default.
Open APIs for fast integration.
One broadcast API plus TMS APIs. Each organization gets its own channel ID, key and callback URL.
- Broadcast income and push dynamic QR codes
- Fetch, update and batch-import devices
- Firmware OTA, remote control and real-time ad tasks
- Transaction history and task result callbacks

Loud enough for every counter.

Night markets

Fresh food stores

Cafés

Wet markets

Newsstands

Food courts
The edition and deployment that fit.
Standard edition
All-in-one server with everything a sound box fleet needs day to day; about 50K devices per server.
Professional edition
Clustered MQTT, ads, maps, server monitoring and third-party API integration; about 200K devices (reference sizing).
SaaS by Centerm
We host Cpay IoT and the EMQX service; you integrate your gateway through the Broadcast API. Best for fast launches.
Self-deployed with EMQX
Cpay IoT and an EMQX cluster on your servers, for data residency and full control. We support deployment and upgrades.
Self-deployed, third-party IoT
Cpay IoT on your servers with AWS, Alibaba Cloud or Tencent Cloud IoT as the MQTT broker.
Reference servers
Standard: one 8-core, 32 GB server. Professional: a web server, a 2-node EMQX cluster and a monitoring server.
Every payment, heard instantly.
Tell us about your gateway, fleet size and preferred deployment, and we will plan the rollout with you.



