# Shelly sensors

*Shelly / 12 models*

> Only the Gen4 sensors have Matter, and the Flood Gen4, Flood S Gen4 and Presence Gen4 hold Matter certifications. Each runs Matter over Wi-Fi by default and can switch to Zigbee firmware. The Gen3 H&T sensors, the Plus Smoke and the Gen1 sensors work over Wi-Fi with a local API. Shelly has discontinued the Plus H&T, the Gen1 H&T and the Motion 2. The Plus Smoke alarm runs on a battery, and the Gas sensor runs on mains power in CNG and LPG versions. Home Assistant supports each sensor except the AZ H&T.

- Canonical page: https://smarthomecanon.com/lines/shelly-sensors
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Shelly](https://smarthomecanon.com/brands/shelly) |
| Models | 12 |
| Lines | 4 |
| Current lines | 4 |
| On sale now | 4 |

## Currently sold

**Shelly sensors: models on sale now**

| Model | Series | Released |
| --- | --- | --- |
| [Shelly H&T Gen3](https://smarthomecanon.com/devices/shelly-h-t-gen3) | Gen3 | unknown |
| [Shelly AZ H&T](https://smarthomecanon.com/devices/shelly-az-h-t) | Gen3 | unknown |
| [Shelly Flood Gen4](https://smarthomecanon.com/devices/shelly-flood-gen4) | Gen4 | unknown |
| [Shelly Flood S Gen4](https://smarthomecanon.com/devices/shelly-flood-s-gen4) | Gen4 | unknown |
| [Shelly Presence Gen4](https://smarthomecanon.com/devices/shelly-presence-gen4) | Gen4 | unknown |
| [Shelly Flood](https://smarthomecanon.com/devices/shelly-flood) | Gen1 | unknown |
| [Shelly Gas CNG](https://smarthomecanon.com/devices/shelly-gas-cng) | Gen1 | unknown |
| [Shelly Gas LPG](https://smarthomecanon.com/devices/shelly-gas-cng) | Gen1 | unknown |
| [Shelly Plus Smoke](https://smarthomecanon.com/devices/shelly-plus-smoke) | Plus | unknown |

## Lineup

**Shelly sensors: every model**

| Model | Model numbers | Generation | Model code | Sensing | Power | Radio | Matter | Status |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [Shelly H&T Gen3](https://smarthomecanon.com/devices/shelly-h-t-gen3) | S3SN-0U12A | Gen3[^1] | S3SN-0U12A[^2] | Temperature and humidity, e-paper display[^2] | 4 AA batteries (about 1 year) or USB-C[^2] | Wi-Fi, Bluetooth 4.2[^2] | unknown | Current[^3][^4] |
| [Shelly AZ H&T](https://smarthomecanon.com/devices/shelly-az-h-t) | S3SN-1U12A | Gen3[^1] | S3SN-1U12A[^5] | Temperature and humidity, e-paper display[^5] | 4 AA batteries or USB-C[^5] | Wi-Fi, Bluetooth 4.2[^5] | unknown | Current[^6][^4] |
| [Shelly Plus H&T](https://smarthomecanon.com/lines/shelly-sensors#shelly-plus-h-t) | SNSN-0013A | Plus[^7] | SNSN-0013A[^8] | Temperature and humidity, e-paper display[^8] | 4 AA batteries (about 1 year) or USB-C[^8] | Wi-Fi, Bluetooth 4.2[^8] | unknown | Replaced by Shelly H&T Gen3[^9] |
| [Shelly H&T](https://smarthomecanon.com/lines/shelly-sensors#shelly-h-t) |  | Gen1[^10] | unknown | Temperature and humidity[^11] | 1 CR123A battery (up to 18 months)[^11] | Wi-Fi 802.11 b/g/n[^11] | unknown | Discontinued[^12] |
| [Shelly Flood Gen4](https://smarthomecanon.com/devices/shelly-flood-gen4) | S4SN-0071A | Gen4[^13] | S4SN-0071A[^14] | Water, through a 2 m leak sensor cable (extendable to 150 m)[^14] | 4 AA batteries (about 2 years)[^14] | Wi-Fi 6, Bluetooth 5, Zigbee[^14] | withheld | Current[^15][^4] |
| [Shelly Flood S Gen4](https://smarthomecanon.com/devices/shelly-flood-s-gen4) | S4SN-0071Z | Gen4[^13] | S4SN-0071Z[^16] | Water, through stainless-steel pads[^16] | 1 CR123A battery, included (about 2 years)[^16] | Wi-Fi 6, Bluetooth 5, Zigbee[^16] | withheld | Current[^17][^4] |
| [Shelly Flood](https://smarthomecanon.com/devices/shelly-flood) |  | Gen1[^10] | unknown | Water and temperature (-40 to 60 C)[^18] | 1 CR123A battery, not included (about 18 months)[^18] | Wi-Fi 802.11 b/g/n[^18] | unknown | Current[^19][^4] |
| [Shelly Plus Smoke](https://smarthomecanon.com/devices/shelly-plus-smoke) | SNSN-0031Z | Plus[^7] | SNSN-0031Z[^20] | Smoke, photoelectric[^20] | 1 CR123A battery (5 years)[^20] | Wi-Fi, Bluetooth 4.2[^20] | unknown | Current[^21][^4] |
| [Shelly Motion 2](https://smarthomecanon.com/lines/shelly-sensors#shelly-motion-2) | SHMOS-02 | Gen1[^10] | SHMOS-02[^22] | Motion (9 m), light, temperature, vibration[^22] | Rechargeable 6500 mAh Li-ion battery (12 to 18 months of active use) or USB-C[^22] | Wi-Fi 802.11 b/g/n[^22] | unknown | Discontinued[^23] |
| [Shelly Presence Gen4](https://smarthomecanon.com/devices/shelly-presence-gen4) | S4SN-0U61X | Gen4[^13] | S4SN-0U61X[^24] | mmWave radar presence (60-64 GHz), light level[^24] | USB-C, 5 V[^24] | Wi-Fi 6, Bluetooth 5, Zigbee[^24] | withheld | Current[^25][^4] |
| [Shelly Gas CNG](https://smarthomecanon.com/devices/shelly-gas-cng) |  | Gen1[^10] | unknown | Compressed natural gas (CNG), alarm at 6% LEL[^26] | Mains, 110-230 V~[^26] | Wi-Fi 802.11 b/g/n[^26] | unknown | Current[^27][^4] |
| [Shelly Gas LPG](https://smarthomecanon.com/devices/shelly-gas-cng) |  | Gen1[^10] | unknown | Liquefied petroleum gas (LPG), alarm at 6% LEL[^26] | Mains, 110-230 V~[^26] | Wi-Fi 802.11 b/g/n[^26] | unknown | Current[^28][^4] |

## Related pages

- [Shelly](https://smarthomecanon.com/brands/shelly) (brand)
- [Shelly H&T Gen3](https://smarthomecanon.com/devices/shelly-h-t-gen3) (device)
- [Shelly AZ H&T](https://smarthomecanon.com/devices/shelly-az-h-t) (device)
- [Shelly Flood Gen4](https://smarthomecanon.com/devices/shelly-flood-gen4) (device)
- [Shelly Flood S Gen4](https://smarthomecanon.com/devices/shelly-flood-s-gen4) (device)
- [Shelly Flood](https://smarthomecanon.com/devices/shelly-flood) (device)
- [Shelly Plus Smoke](https://smarthomecanon.com/devices/shelly-plus-smoke) (device)
- [Shelly Presence Gen4](https://smarthomecanon.com/devices/shelly-presence-gen4) (device)
- [Shelly Gas CNG](https://smarthomecanon.com/devices/shelly-gas-cng) (device)

## Sources

[^1]: Shelly Gen3 devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gen3-devices (manufacturer, checked 2026-10-13)
[^2]: Shelly H&T Gen3 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-h-t-gen3 (manufacturer, checked 2026-10-13)
[^3]: Shelly H&T Gen3 List - Shelly Europe shop. https://www.shelly.com/products/shelly-h-t-gen3-1 (manufacturer, checked 2026-10-13)
[^4]: Shelly Europe shop catalog (Shopify product feed, pages 1-4). https://www.shelly.com/products.json?limit=250&page=1 (manufacturer, checked 2026-10-13)
[^5]: Shelly AZ H&T - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-az-h-t (manufacturer, checked 2026-10-13)
[^6]: Shelly AZ H&T Black - Shelly Europe shop. https://www.shelly.com/products/shelly-az-h-t (manufacturer, checked 2026-10-13)
[^7]: Shelly Plus devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-plus-devices (manufacturer, checked 2026-10-13)
[^8]: Shelly Plus H&T - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-plus-h-t (manufacturer, checked 2026-10-13)
[^9]: Shelly Plus H&T - Shelly Europe shop. https://www.shelly.com/products/shelly-plus-h-t (manufacturer, checked 2026-10-14)
[^10]: Shelly Gen1 devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gen1-devices (manufacturer, checked 2026-10-13)
[^11]: Shelly H&T - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-h-t (manufacturer, checked 2026-10-13)
[^12]: Shelly H&T List - Shelly Europe shop. https://www.shelly.com/products/shelly-h-t-1 (manufacturer, checked 2026-10-13)
[^13]: Shelly Gen4 devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gen4-devices (manufacturer, checked 2026-10-13)
[^14]: Shelly Flood Gen4 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-flood-gen4 (manufacturer, checked 2026-10-13)
[^15]: Shelly Flood Gen4 - Shelly Europe shop. https://www.shelly.com/products/shelly-flood-gen4 (manufacturer, checked 2026-10-13)
[^16]: Shelly Flood S Gen4 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-flood-s-gen4 (manufacturer, checked 2026-10-13)
[^17]: Shelly Flood S Gen4 - Shelly Europe shop. https://www.shelly.com/products/shelly-flood-s-gen4 (manufacturer, checked 2026-10-13)
[^18]: Shelly Flood - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-flood (manufacturer, checked 2026-10-13)
[^19]: Shelly Flood - Shelly Europe shop. https://www.shelly.com/products/shelly-flood (manufacturer, checked 2026-10-13)
[^20]: Shelly Plus Smoke - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-plus-smoke (manufacturer, checked 2026-10-13)
[^21]: Shelly Plus Smoke Alarm - Shelly Europe shop. https://www.shelly.com/products/shelly-plus-smoke-alarm (manufacturer, checked 2026-10-13)
[^22]: Shelly Motion 2 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-motion-2 (manufacturer, checked 2026-10-13)
[^23]: Shelly Motion 2 - Shelly Europe shop. https://www.shelly.com/products/shelly-motion-2 (manufacturer, checked 2026-10-13)
[^24]: Shelly Presence Gen4 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-presence-gen4 (manufacturer, checked 2026-10-13)
[^25]: Shelly Presence Gen4 List - Shelly Europe shop. https://www.shelly.com/products/shelly-presence-gen4 (manufacturer, checked 2026-10-13)
[^26]: Shelly Gas - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gas (manufacturer, checked 2026-10-13)
[^27]: Shelly GAS (CNG) - Shelly Europe shop. https://www.shelly.com/products/shelly-gas-sensor-cng (manufacturer, checked 2026-10-13)
[^28]: Shelly GAS (LPG) - Shelly Europe shop. https://www.shelly.com/products/shelly-gas-lpg-2 (manufacturer, checked 2026-10-13)