IoT Gateway for Cloud

IoT Gateway for Cloud – MQTT Cloud Gateway for Remote Monitoring, Alarms, and Control

Sollae IoT gateways for cloud connect sensors, Modbus devices, and I/O signals directly to Sollae Cloud via MQTT — so you can monitor live values, trigger actions, and manage multiple sites from one browser without building server infrastructure.

What Cloud IoT Gateways Are Used For in Practice

A gateway for cloud is typically purchased to reduce manual site checks and make existing equipment visible and controllable remotely. Common applications include:

Remote equipment monitoring — status counters, runtime data, fault signals
Energy and utility visibility — meters, pumps, valves, building subsystems
Condition-based maintenance — threshold alerts and historical logging for predictive decisions
Remote relay control — on/off commands, pulse outputs, and scheduled switching actions
Modernizing Modbus devices — bringing RS485 Modbus RTU/ASCII instruments into cloud dashboards

How Sollae Cloud IoT Gateways Work: MQTT over TLS to Sollae Cloud

Sollae cloud gateways connect to Sollae IoT Cloud using MQTT over TLS. Once online, the platform provides live values, remote control, automation rules, and multi-user access — without requiring a VPN or a custom server.

Live value dashboards and device state views from any browser
Time-based schedules for automated switching at remote or unattended sites
Event-action automation — set thresholds, receive notifications, and trigger outputs
Multi-site management under one account with multi-user access control

Quick fit check: If your field device speaks Modbus RTU/ASCII, start with an SMG Modbus-to-cloud model. If you need direct signal connectivity (analog, digital inputs, relay outputs, temperature), start with a SIG model.

Compare Cloud Gateway Models: Modbus-to-Cloud vs Remote I/O for Cloud

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

Security and Deployment: MQTT over TLS, Certificate Authentication, Industrial Range

Many MQTT cloud gateways handle data transport and then leave you to build dashboards and automation on top. Sollae IoT gateways for cloud ship with Sollae Cloud integration already designed in — alarms, scheduling, event-action rules, and multi-user access are part of the platform, not add-ons.

MQTT over TLS for secure transport, with certificate-based authentication on select models
No VPN or custom server required — all device management runs through Sollae Cloud
Wide operating temperature range across the lineup for industrial environments
Wi-Fi connectivity available on the SIG-5601 all-in-one model for flexible site deployment

Cloud Gateway Buyer Checklist

Modbus RTU/ASCII or signals? Modbus field devices → SMG series. Analog / digital / relay / temperature signals → SIG series.
Interface needed: RS485/RS422, RS232, or pure signal I/O.
Control required? Relay outputs, pulse control, or scheduled switching → choose SIG-5451 or SIG-5601.
Connectivity constraints: Ethernet everywhere, or Wi-Fi flexibility (SIG-5601).
Security requirements: plan for MQTT over TLS and certificate-based authentication where data leaves a trusted network.

Best all-rounder: The SIG-5601 covers analog inputs, digital inputs, relay outputs, and Wi-Fi in one device — a practical starting point for new remote monitoring sites.