
Two Shelly Plug IT sockets with an Italian plug and a Shelly H&T Gen3 sensor, to run the water heater only when you need it and the bathroom heater by temperature. They go into the existing sockets, with no installation work, and are controlled from the Shelly app, on a schedule and by voice.
What it does
- The first Shelly Plug IT switches the water heater on only in the time slots when hot water is needed, early morning and evening for example.
- The second socket feeds the bathroom heater, which comes on when the temperature read by the H&T Gen3 drops below the threshold and goes off when it reaches it.
- The H&T Gen3 sensor shows temperature and humidity on its display and sends them to the app.
- The sockets meter consumption: you can see how much energy the water heater uses over the day.
- From the app you switch the water heater on from away, so there is hot water when you get back.

How it is installed
What's in the kit

| Qty | Item | Unit price | Subtotal |
|---|---|---|---|
| 2 | Shelly Plug IT type L socketSmart socket | 29,99 € | 59,98 € |
| 1 | Shelly H&T Gen3 (AA)Climate sensor | 39,99 € | 39,99 € |
| 1 | Energizer Ultimate Lithium AA, pack of 4Accessory: batteries · needed because the device comes without batteries | 8,11 € | 8,11 € |
| Kit total | 108,08 € |
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 basket3 items, 4 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. The plugs and the sensor connect straight to the home Wi-Fi and are managed from the Shelly app. All you need is a router with 2.4GHz Wi-Fi covering the bathroom and the spot where the water heater is.
Will my water heater work with it?
It works if it has an Italian plug and a thermostat of its own, and if its power is within the maximum load the socket's manufacturer states. If the water heater is hard-wired with no plug, a flush-mounted module fitted by an electrician is needed: get in touch through the contact page.
Is it safe to run an electric heater from a smart socket?
Use a heater with its own safety cut-outs and thermostat, plugged straight into the socket with no extension leads. In the app it is worth setting a maximum run time and a notification. Do not leave the heater near curtains or towels, as the manufacturer states.
Do you need an electrician?
No. The plugs go into the existing sockets and the sensor is battery-powered. The only thing to check is that the installation and the wall socket suit the power of the water heater and the fan heater.
Are batteries included?
Yes: the kit includes four Energizer Ultimate Lithium AA cells for the H&T Gen3, because the sensor's own box does not have any. The two sockets are powered from the wall socket and have no batteries.
Does it work with Alexa and Google?
Yes, with the Shelly integrations you switch on in the app: the sockets show up in the assistant and switch on by voice, the water heater before you head back for example. The temperature thresholds are set in the Shelly app.
What happens if there is no internet?
The sockets carry on working as ordinary sockets and the appliances keep their own thermostats. Without internet you lose control from away and the voice assistants; whether schedules and thresholds keep working depends on the manufacturer's local features.
What if a product is out of stock on Amazon?
Get in touch through the contact page quoting the kit code: we will point you to an alternative that works with the rest of the set, so you do not have to hunt for an equivalent model yourself and risk buying a part that will not talk to the other devices in the kit.
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 is our own work: we picked parts that work together, plus the accessories you actually need to fit it.
Notes
Not included
- Water heater and fan heater
- The home Wi-Fi router
- Changes to the electrical installation
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