IoT Gateway for Cloud

Buy a Cloud Gateway for Secure MQTT Remote Monitoring and More

If you’re looking to buy a cloud gateway that gets your field devices online fast (without building your own platform), Sollae cloud gateways are built for exactly that: connect sensors, Modbus devices, and I/O points to Sollae Cloud so you can monitor live values, trigger actions, and scale to multiple sites from one browser.

Why teams choose Sollae cloud gateways

No VPNs or custom servers to maintain — manage devices centrally in the cloud.
MQTT over TLS for secure transport (with certificate-based security on select models).
Dashboards + visualization and quick setup for real projects (not just “raw data”).
Automation: alarms, scheduling, event-action rules, and multi-user access.

What Cloud Gateways Are Used For in Practice

In real operations, a cloud gateway is usually bought to reduce site visits and make existing equipment “digital-ready”. Typical use cases include:

Remote equipment monitoring (status, counters, runtime, fault signals)
Energy & utility visibility (meters, pumps, valves, building subsystems)
Condition-based maintenance (threshold alerts + historical logging)
Remote control of relays/outputs (on/off, pulses, scheduled actions)
Modernizing Modbus devices by bringing Modbus RTU/ASCII into cloud dashboards

How Sollae Cloud Gateways Work (MQTT Cloud Gateway + Web UI)

Sollae cloud gateways connect securely to Sollae IoT Cloud via MQTT. Once the device is online, you can:

View live values and device states from anywhere
Switch outputs and run time-based schedules (ideal for remote sites)
Create automation rules (event-action) and receive alerts/notifications
Centralize multiple locations under one account (multi-user friendly)

Buying tip: If your “problem” is Modbus, start with the Modbus-to-Cloud models (SMG). If your “problem” is signals (DI/DO/AI/temperature), start with the SIG Remote I/O models.

Choose the Right Cloud Gateway: Modbus-to-Cloud vs Remote I/O (Comparison)

Type / Model	What it connects	Best for
Modbus-to-Cloud MQTT Gateway SMG-5521 (RS422/RS485)	Modbus RTU/ASCII devices over RS422/RS485 → Cloud via Ethernet	Energy meters, PLC-adjacent Modbus sensors, legacy RS485 equipment you want in cloud dashboards
Modbus-to-Cloud MQTT Gateway SMG-5511 (RS232)	Modbus RTU/ASCII devices over RS232 → Cloud via Ethernet	Serial Modbus instruments, controllers, and legacy devices with RS232 interfaces
Analog Input Cloud Gateway SIG-5431 (4AI)	0–5V / 4–20mA / 0–20mA sensors → Cloud via Ethernet	Pressure/level/flow sensors, analog transmitters, threshold alerts and trend logging
Digital Input Cloud Gateway SIG-5441 (4DI + counters)	Dry/Wet contact + NPN/PNP signals (with counting) → Cloud via Ethernet	Status monitoring, pulse counting, usage tracking, alarms when states or counters change
Digital Output Cloud Gateway SIG-5451 (2DO relays)	Relay outputs (NO/NC) → Cloud via Ethernet (manual, pulse, or scheduled control)	Remote switching, rebooting equipment, timed control of actuators/relays at unattended sites
Temperature Cloud Gateway SIG-5561 (PT100)	PT100 temperature (3-wire) → Cloud via Ethernet	Cold-chain, process temperature, alerts + automation when thresholds are crossed
All-in-One I/O Cloud Gateway SIG-5601 (4AI/4DI/4DO + Ethernet/Wi-Fi)	Mixed sensors + relays → Cloud (Ethernet or Wi-Fi)	One device for monitoring + control at remote sites (signals + analog + automation + scheduling)

Why Sollae Cloud Gateways Are Better Than “Generic” Cloud Gateways

Many MQTT gateways get you “data transport”, but you still end up spending time on dashboards, user access, and automation logic. Sollae focuses on fast deployment and operational usefulness.

Built for rollout: multi-user access, alarms, logging, scheduling and event-action automation in one ecosystem
Security-first: MQTT over TLS, and certificate-based TLS authentication on select models
Remote control that’s practical: relay outputs, pulses, and schedule-based actions (ideal for unmanned sites)
Industrial-ready: wide operating temperature range across the lineup
Right-sized options: choose Modbus-to-Cloud, Analog, Digital Input, Digital Output, Temperature, or All-in-One I/O

Who Gets the Most Value From Cloud Gateways?

Company owners modernizing equipment without hiring a full IoT development team
IT/OT specialists who want secure remote visibility and fewer site visits
System integrators delivering repeatable monitoring/control projects across multiple locations
Facility & energy managers who need monitoring, alarms, and simple control workflows

Cloud Gateway Buyer Checklist (Before You Order)

Signals vs Modbus? If you need Modbus RTU/ASCII to cloud, choose SMG. If you need DI/DO/AI/temperature, choose SIG.
Interface needed: RS485/RS422, RS232, or pure I/O.
Control required? Need relays, pulses, or schedules — choose SIG-5451 or SIG-5601.
Connectivity constraints: Ethernet everywhere, or Wi-Fi flexibility (SIG-5601).
Security requirements: prioritize MQTT over TLS and certificate-based authentication where required.

Ready to move from “manual checks” to remote monitoring? Pick your cloud gateway above — or start with an all-rounder (SIG-5601) if you want one device for both monitoring and control.