MQTT Trigger consultants

Q: Which MQTT brokers does the trigger work with?

The MQTT Trigger node works with any standard MQTT broker -- Mosquitto, HiveMQ, EMQX, AWS IoT Core, Azure IoT Hub, and others. You configure the broker address, port, and authentication credentials in n8n, then subscribe to the topics you want to monitor. We have connected it to both cloud-hosted and on-premises brokers for clients across Australia.

Q: Can n8n handle high-frequency MQTT messages without dropping data?

n8n processes MQTT messages sequentially per workflow, so it works well for moderate message rates (a few messages per second). For very high-frequency sensor data (hundreds of messages per second), we typically pre-aggregate messages at the broker level or use a buffer before they reach n8n. The right architecture depends on your specific data volume, and we design it accordingly.

Q: What QoS levels are supported?

The MQTT Trigger node supports QoS 0 (at most once), QoS 1 (at least once), and QoS 2 (exactly once). For business-critical data like compliance readings or equipment alerts, we configure QoS 1 or 2 to ensure no messages are lost. For high-volume telemetry where the occasional missed reading does not matter, QoS 0 reduces overhead.

Q: Can the trigger handle JSON payloads from IoT devices?

Yes. Most modern IoT devices publish structured JSON payloads, and the MQTT Trigger node can parse these automatically. Once parsed, you can access individual fields (temperature, humidity, device ID, timestamp) in downstream workflow nodes. For devices that publish raw binary or CSV data, we add a code node after the trigger to parse the payload into a usable format.

We can help you automate your business with MQTT Trigger and hundreds of other systems to improve efficiency and productivity. Get in touch if you’d like to discuss implementing MQTT Trigger.

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About MQTT Trigger

MQTT Trigger is an n8n node that starts a workflow whenever a message arrives on a specific MQTT topic. MQTT (Message Queuing Telemetry Transport) is a lightweight messaging protocol built for IoT devices, sensors, and machine-to-machine communication. If you have temperature sensors, GPS trackers, industrial equipment, or smart building systems publishing data over MQTT, this trigger node lets n8n listen for those messages and act on them automatically.

The practical problem MQTT Trigger solves is connecting IoT and operational technology (OT) data to your business systems. Your sensors might be publishing readings every few seconds, but that data is useless sitting on an MQTT broker. The MQTT Trigger node in n8n picks up those messages and routes them into databases, dashboards, alerting systems, or AI models for analysis — turning raw device data into actionable business intelligence.

At Osher Digital, we use the MQTT Trigger node when building system integrations that bridge the gap between physical infrastructure and business software. This includes monitoring environmental sensors for compliance reporting, tracking asset locations in real time, and triggering maintenance workflows when equipment readings fall outside normal ranges. If your organisation has IoT devices generating data that nobody is acting on, this is where we start.

MQTT Trigger FAQs

Frequently Asked Questions

Common questions about how MQTT Trigger consultants can help with integration and implementation

What is MQTT and why would my business use it?

MQTT is a messaging protocol designed for devices with limited bandwidth or intermittent connectivity — sensors, GPS trackers, industrial controllers, and smart building systems. If your business has physical devices that generate data (temperature readings, location updates, equipment status), they are likely publishing that data using MQTT. The MQTT Trigger in n8n lets you capture that data and feed it into your business workflows automatically.

Which MQTT brokers does the trigger work with?

Can n8n handle high-frequency MQTT messages without dropping data?

What QoS levels are supported?

Can the trigger handle JSON payloads from IoT devices?

What does Osher typically build with MQTT Trigger?

Common projects include environmental monitoring dashboards (temperature, humidity, air quality sensors feeding into a database and alerting system), asset tracking workflows (GPS data from fleet vehicles or equipment), and predictive maintenance pipelines (equipment sensor readings analysed by AI models to flag potential failures before they happen). These are built as part of our automated data processing offering.

How it works

We work hand-in-hand with you to implement MQTT Trigger

As MQTT Trigger consultants we work with you hand in hand build more efficient and effective operations. Here’s how we will work with you to automate your business and integrate MQTT Trigger with integrate and automate 800+ tools.

Step 1

Assess Your IoT and Sensor Infrastructure

We document what devices and sensors you have, what MQTT broker they publish to, what topics and payload formats they use, and what data is currently being captured or ignored. We also check broker configuration, authentication methods, and network accessibility from where your n8n instance will run.

Step 2

Define What Should Happen With the Data

We work with your team to define what actions should be triggered by incoming MQTT messages. This might be storing readings in a time-series database, sending alerts when values exceed thresholds, updating a dashboard, or feeding data into an AI model. Each use case gets a clear specification before we start building.

Step 3

Configure the MQTT Connection in n8n

We set up the MQTT Trigger node with your broker credentials, topic subscriptions, and QoS settings. We configure SSL/TLS for encrypted connections if your broker supports it. We test the connection to confirm n8n is receiving messages reliably and parsing the payloads correctly.

Step 4

Build Processing and Routing Logic

We create the downstream workflow that processes each incoming message — parsing the payload, applying threshold checks, transforming the data, and routing it to the appropriate destination. For complex setups with multiple device types, we add branching logic so different topics get processed differently.

Step 5

Test Under Real Conditions

We run the workflow against live MQTT traffic from your devices, validating that messages are received, parsed, and processed correctly. We test edge cases like malformed payloads, connection drops, and high message bursts. We verify that alerts fire at the right thresholds and that data arrives in your database accurately.

Step 6

Deploy With Monitoring

We deploy the production workflow with connection monitoring so you are alerted if the MQTT connection drops or if message processing fails. We document the topic subscriptions, payload formats, and alert thresholds so your team can adjust settings as devices are added or changed. We provide two weeks of post-launch monitoring.

Transform your business with MQTT Trigger

Unlock hidden efficiencies, reduce errors, and position your business for scalable growth. Contact us to arrange a no-obligation MQTT Trigger consultation.

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