
For the house at the seaside or in the mountains with no fixed internet line: a 4G router brings the connection, a motorised valve shuts the water off if the sensor detects a leak, a Shelly relay fires the boiler when the house gets too cold and a 2K outdoor camera watches the entrance. All from the Shelly app and the eWeLink app.
What it does
- The TP-Link TL-MR105 router with a data SIM creates the home Wi-Fi network and connects it to the internet over 4G.
- The Shelly Flood Gen4 sensor, with its lead probe on the floor, detects water and the FrankEver DN15 motorised valve shuts off the house supply.
- The Shelly H&T Gen3 sensor measures temperature and humidity: if the house drops below the threshold you choose, the Shelly 1 Gen3 relay fires the boiler.
- The dry-contact relay wires to the boiler's thermostat input, like an extra room thermostat.
- The Sonoff CAM-B1P 2K outdoor camera watches the entrance or the garden and records to microSD.
- From far away you shut the water off or turn it back on, switch the heating on before you arrive and look in on the house.

How it is installed
What's in the kit

| Qty | Item | Unit price | Subtotal |
|---|---|---|---|
| 1 | TP-Link TL-MR105 – 4G Wi-Fi router with SIMNetwork / connectivity | 59,99 € | 59,99 € |
| 1 | FrankEver DN15 water valve (Shelly)Water valve | 124,69 € | 124,69 € |
| 1 | Shelly Flood Gen4 with probe cable (AA)Water sensor | 29,90 € | 29,90 € |
| 1 | Shelly 1 Gen3 Matter relay 16ARelay / switch | 15,30 € | 15,30 € |
| 1 | Shelly H&T Gen3 (AA)Climate sensor | 39,99 € | 39,99 € |
| 1 | Sonoff CAM-B1P 2K outdoor cameraCamera | 34,29 € | 34,29 € |
| 1 | Wago 221-413 lever connectors, 10 piecesAccessory: connections · module connections | 8,99 € | 8,99 € |
| 1 | QWORK IP65 weatherproof box 150x110 mmAccessory: outdoors · modules outdoors | 12,99 € | 12,99 € |
| 1 | Assorted IP68 cable glands, 52 piecesAccessory: outdoors · watertight cable entry | 8,99 € | 8,99 € |
| 1 | SanDisk High Endurance microSD 64GBAccessory: storage · one per camera | 33,99 € | 33,99 € |
| 1 | 5V 2A USB power supplies, 3 piecesAccessory: power · needed because the device comes without a power supply | 10,99 € | 10,99 € |
| 1 | Energizer Ultimate Lithium AA, pack of 4Accessory: batteries · needed because the device comes without batteries | 8,11 € | 8,11 € |
| Kit total | 388,22 € |
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 basket12 items, 12 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?
No: all the devices are Wi-Fi and connect to the 4G router included. All you need is a data SIM from any network, not part of the kit, to put in the router. Choose a plan with enough data, especially if you watch the camera often.
Does it work with Alexa and Google?
Yes: the Shelly devices connect to Alexa and Google Home through the Shelly integration, the Sonoff camera through the eWeLink integration. For a second home, though, the app remains the more useful control, with the notifications on your phone.
Do you need an electrician?
Yes. The relay wires to the boiler and runs on 230V: it must be fitted by qualified personnel with the installation isolated. The valve goes on the water pipe: that is a plumber's job. The router, the sensors and the camera need no work on the installation beyond fixing them in place.
Will it work with my boiler?
With boilers that have a room thermostat input, which is most wall-hung boilers. The volt-free relay closes that input like an extra thermostat. Behaviour depends on the boiler and how it is set up: if in doubt, get in touch through the contact page with the model.
What happens if the 4G goes down?
With no connection no notifications arrive and you cannot control anything from outside. Actions set up locally on the Shelly devices stay active, as the manufacturer states, and the camera keeps recording to the microSD. When the signal comes back everything picks up on its own.
Are batteries included?
The kit includes a pack of Energizer Ultimate Lithium AA cells, which are not supplied with the sensors: lithium copes better with the cold of a house left empty over winter. Check how many cells each sensor takes and keep a spare for your next visit.
Can I add devices?
Yes: more water sensors for the bathrooms and the kitchen, modules for lights and roller shutters or a second camera. Everything joins the 4G router's Wi-Fi, which handles the devices of a household without trouble.
What if a product is out of stock on Amazon?
An item can go out of stock 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 coordinator, so the kit stays complete and performs as intended.
Why buy on Amazon?
Purchase, delivery, returns and warranty are handled by Amazon: delivery times, returns and warranty are shown on Amazon when you buy. The kit itself is our own work: we picked devices that work together and the accessories needed to fit them.
Notes
Not included
- A data SIM and a 4G plan
- Boiler and heating system
- Plumber's work for the valve
- Electrical connections and the electrician's labour
- Cloud subscriptions for the camera
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