Shelly H&T Gen3
Battery or USB-C powered · No wiring · No hub needed
In stock · Ships in 1 to 2 business days
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Key features
E-paper display, readable at a glance: temperature and humidity shown on the device itself.
No hub: connects straight to Wi-Fi and reports directly to the app.
Battery or USB-C: around a year on 4 × AA, or permanent USB-C power; freestanding or wall-mounted.
Works with your ecosystem: Amazon Alexa, Google Home and SmartThings.
Automate your heating: pair a Shelly Plug with the H&T Gen3 so the heater switches on just before the temperature drops.
Bathroom humidity control: pair a Shelly relay with the H&T Gen3 so the extraction fan switches on automatically once humidity climbs too high.
Works with
Google Home
Amazon Alexa
Samsung SmartThings
Matter
Shelly Smart Control app
MQTT
About this product
The Shelly H&T Gen3 measures temperature and humidity and shows them on a large e-paper screen alongside time, Wi-Fi signal and battery level. Readable at a glance without opening an app. It connects straight to Wi-Fi, no hub required.
It runs on 4 × AA batteries (about a year) or from USB-C for a permanent placement (the USB port powers the device but doesn't charge the batteries). It stands freestanding on the included stand or mounts on a wall with screws or adhesive.
Unlike the Bluetooth BLU H&T, this is a full Wi-Fi device that reports directly to the Shelly app and works with Alexa, Google Home and SmartThings. Available here in White and Ivory.
Model: S3SN-0U12A
No electrician: battery or USB-C powered; stand or wall-mount and pair over Wi-Fi in the app.
Tech specs
Physical
| Model | S3SN-0U12A |
| Dimensions | 70 × 70 × 26 mm |
| Weight | 47 g |
| Mounting | Freestanding (stand) or wall |
Electrical
| Operating temperature | 0 °C to 40 °C |
Connectivity
| Wi-Fi | 802.11 b/g/n |
| Bluetooth | 4.2 |
| Matter | Matter certified |
Compatibility
| Compatibility notes | Wi-Fi device (no gateway needed): distinct from the Bluetooth BLU H&T. USB-C powers the unit but does not charge the AA batteries. |
Warranty
| Manufacturer warranty | 3 Years |
| Free Ohmly extension | +1 Year Free Ohmly Warranty |
