
For craft workshops where the air fills with dust or gets heavy. The Sonoff AirGuard monitor measures CO2, the PM2.5/PM10 monitor measures fine dust, and the 16A MINI ONE Zigbee relay switches the extraction on when one of the readings goes above the threshold. Readings, history and scenes in the eWeLink app, with the hub included.
What it does
- The Sonoff AirGuard monitor measures the CO2 concentration: it rises when the room is closed and occupied, and shows that fresh air is needed.
- The PM2.5/PM10 monitor picks up the fine dust from sanding, cutting and similar work.
- The MINI ONE Zigbee relay starts the extractor or the extraction system when CO2 or particulates go over the threshold and stops it when the readings are back to normal.
- The Sonoff ZB Bridge Pro hub connects the Zigbee relay to the eWeLink app, where the two monitors appear as well.
- The history shows which hours and which operations make the air worse.

How it is installed
What's in the kit

| Qty | Item | Unit price | Subtotal |
|---|---|---|---|
| 1 | Sonoff ZB Bridge Pro Zigbee hubCoordinator / gateway | 33,99 € | 33,99 € |
| 1 | Sonoff AirGuard CO2Air quality | 56,27 € | 56,27 € |
| 1 | Sonoff PM2.5/PM10 monitorAir quality | 40,91 € | 40,91 € |
| 1 | Sonoff MINI ONE Zigbee 16ARelay / switch | 18,35 € | 18,35 € |
| 1 | Wago 221-413 lever connectors, 10 piecesAccessory: connections · module connections | 8,99 € | 8,99 € |
| 1 | 5V 2A USB power supplies, 3 piecesAccessory: power · needed because the device comes without a power supply | 10,99 € | 10,99 € |
| Kit total | 169,50 € |
Recommended options
| Qty | Item | When you need it | Price |
|---|---|---|---|
| 1 | Deep flush 503 back boxes, 5 pieces | if the module will not fit behind the switch insert | 9,23 € |
| 1 | Gewiss junction box 118x96x70 | or modules in the junction box instead | 6,58 € |
| Options total | 15,81 € |
Prices taken from Amazon.it on 22/09/2026: they can change, and the price Amazon shows at the time of purchase is the one that applies.
Add the whole kit to your Amazon basket6 items, 6 pieces · optional extras are added from the individual linksDelivery, returns and warranty: Amazon shows these when you buy.
Before you order
Do you need a hub?
Yes, for the MINI ONE relay, which is Zigbee: the Sonoff ZB Bridge Pro hub is included. The two air monitors appear in the same eWeLink app, where you build the scenes that tie the readings to switching the extractor fan on.
Does it replace the safety extraction system?
No. The kit helps keep the air clean during ordinary work, but it does not replace the local extraction systems, protective equipment and assessments required for dust or hazardous substances. For those, refer to your safety consultant.
Do you need an electrician?
Yes, for the relay: it wires into 230V on the extractor fan circuit. The connections must be made by qualified personnel, with the installation isolated, following the manufacturer's diagram. The hub and the monitor go up with no electrical work.
Does it work with Alexa or Google Home?
The eWeLink app offers integration with Alexa and Google Home as the manufacturer states. For the thresholds and the scenes that drive the extractor it is better to work directly in eWeLink, where the readings from the two monitors and the history can also be seen.
What happens if there is no internet?
The extractor can always be switched on from its own switch or from the relay's push-button. Scenes that depend on the monitors, and the notifications, can stop without a line, depending on the local functions of the eWeLink app: check how it behaves once the connection is back.
Can I add more measuring points?
Yes: you can add more monitors and more relays in the same app, for a second department or a spray booth for example. Get in touch through the contact page with a plan of the workshop.
What if a product is out of stock on Amazon?
An item can sell out or change version. Get in touch through the contact page quoting the kit code: we will point you to an alternative that works with the other devices and with the same app, so you keep a combination we have checked and you do not have to go back over anything yourself.
Why buy on Amazon?
Purchase, payment, delivery, returns and warranty are handled by Amazon, as with any other order: delivery times, returns and warranty are shown on Amazon when you buy. The kit is our own work: we picked parts that work together, plus the accessories needed to fit them.
Notes
Not included
- Extractor fan, extraction unit or extraction system
- Contactor for extractor fans over 16A or three-phase
- Electrical connections, to be left to an electrician
- A Wi-Fi router and an internet connection
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