Industrial IoT comparison
Edge RTU vs IoT Gateway
Compare Edge RTU and IoT gateway roles in SCADA retrofit, remote IO and cloud-connected industrial monitoring.
Hardware in this guide
Product-family photos. See each product page for specifications and options.
Need a project-specific choice?
Send your existing device models, power, network and the readings you need. We can compare compatible equipment and prepare a quotation.
At your site
An Edge RTU focuses on field signals, point lists and control-room protocols. An IoT gateway focuses on connectivity, payload translation and cloud handoff.
Decision table
Primary role
- Edge RTU
- Collects IO and field protocol points
- IoT gateway
- Moves data to cloud or platform
- Guidance
- Many projects use both roles in one package.
Receiving-system requirements
- Edge RTU
- SCADA, digital and analog inputs/outputs, point list
- IoT gateway
- MQTT, API, cellular, device management
- Guidance
- Confirm the interfaces and protocols required by the receiving system.
Hardware focus
- Edge RTU
- Rugged IO and local polling
- IoT gateway
- Backhaul, protocol conversion and security
- Guidance
- Quote scope depends on where the data leaves the site.
Serial port and firmware
- Edge RTU
- Confirm active polling and supported point types
- IoT gateway
- Check transport, conversion and MQTT publishing separately
- Guidance
- A serial port alone does not establish local acquisition or a cloud payload.
Remote access
- Edge RTU
- Document controller access and permissions
- IoT gateway
- Confirm the exact VPN mode, configuration and firmware
- Guidance
- Match the supported client or server role to your network.
Equipment in the system
Example equipment arrangement. Check compatibility and agree who handles software, PLC/SCADA programming and site installation.
Data destination
Customer platform or an agreed third-party service
Hardware used in the comparison
Product-family photos; the model and enclosure may vary.
Choose Edge RTU when
- The project has a defined I/O point list
- Remote IO and local protocols are central
- SCADA compatibility is the main requirement
Choose IoT gateway when
- The buyer needs MQTT or cloud data
- Cellular or Ethernet backhaul is central
- Payload format and integration are the main questions
Information needed for quotation
- Point list and signal type
- Northbound protocol
- Cabinet power and enclosure needs
- Cloud or SCADA endpoint
Hardware to confirm before quotation
Product-family photos; the model and enclosure may vary.
Related pages
FAQ
How do I choose between the two options?
Edge RTU fits these conditions: The project has a defined I/O point list. Choose IoT gateway when the receiving system requires a documented MQTT or cloud interface. SunGene can shortlist hardware after reviewing the site and integration details.
Can SunGene quote both options?
Yes. Send the site layout, measurements, available network and quantity. We can compare equipment and accessories for both options.
Does this comparison include pricing or guaranteed certification?
No. Pricing and certification depend on the selected hardware configuration and target country, so they are confirmed during quotation.
Can we test an option before a wider rollout?
Ask for a sample or pilot configuration. Agree the interfaces, power, mounting and receiving system, then compare local readings with the received data. Confirm model-specific documents and any required approvals before ordering.