# Shelly inputs and controllers

*Shelly / 5 models*

> The i4 modules read four wall-switch inputs, and the Gen4 i4 is the one that adds Matter and Zigbee. The i4 Gen3 and the Plus i4 are Wi-Fi and Bluetooth modules, and the Plus i4 DC takes 5 to 24 V DC instead of mains power. Shelly has discontinued the Plus i4. The Button1, which Shelly has discontinued, is a separate battery-powered button that triggers scenes over Wi-Fi. Home Assistant supports each device on this page, and each one offers MQTT, HTTP and webhooks or the Gen1 REST API.

- Canonical page: https://smarthomecanon.com/lines/shelly-inputs-and-controllers
- Last checked: 2026-10-14

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Shelly](https://smarthomecanon.com/brands/shelly) |
| Models | 5 |
| Lines | 4 |
| Current lines | 3 |
| On sale now | 3 |

## Currently sold

**Shelly inputs and controllers: models on sale now**

| Model | Series | Released |
| --- | --- | --- |
| [Shelly i4 Gen4](https://smarthomecanon.com/devices/shelly-i4-gen4) | Gen4 | unknown |
| [Shelly i4 Gen3](https://smarthomecanon.com/devices/shelly-i4-gen3) | Gen3 | unknown |
| [Shelly Plus i4 DC](https://smarthomecanon.com/devices/shelly-plus-i4-dc) | Plus | unknown |

## Lineup

**Shelly inputs and controllers: every model**

| Model | Model numbers | Generation | Model code | Inputs | Power | Radio | Matter | Status |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [Shelly i4 Gen4](https://smarthomecanon.com/devices/shelly-i4-gen4) | S4SN-0A24X | Gen4[^1] | S4SN-0A24X[^2] | Four switch inputs[^2] | 110-240 V~[^2] | Wi-Fi 6, Bluetooth 5, Zigbee[^2] | Built in (default). Zigbee is the alternate profile.[^2] | Current[^3][^4] |
| [Shelly i4 Gen3](https://smarthomecanon.com/devices/shelly-i4-gen3) | S3SN-0024X | Gen3[^5] | S3SN-0024X[^6] | Four switch inputs[^6] | 110-240 V~[^6] | Wi-Fi, Bluetooth 4.2[^6] | unknown | Current[^7][^4] |
| [Shelly Plus i4](https://smarthomecanon.com/devices/shelly-plus-i4-dc) | SNSN-0024X | Plus[^8] | SNSN-0024X[^9] | Four switch inputs[^9] | 110-240 V~[^9] | Wi-Fi, Bluetooth 4.2[^9] | unknown | Replaced by Shelly i4 Gen3[^10] |
| [Shelly Plus i4 DC](https://smarthomecanon.com/devices/shelly-plus-i4-dc) | SNSN-0D24X | Plus[^8] | SNSN-0D24X[^11] | Four switch inputs[^11] | 5-24 V DC[^11] | Wi-Fi, Bluetooth 4.2[^11] | unknown | Current[^12][^4] |
| [Shelly Button1](https://smarthomecanon.com/lines/shelly-inputs-and-controllers#shelly-button-1) |  | Gen1[^13] | unknown | One button[^14] | Rechargeable battery, micro USB 5 V (3,000 actions per charge)[^14] | Wi-Fi 802.11 b/g/n[^14] | unknown | Discontinued[^15] |

## Related pages

- [Shelly](https://smarthomecanon.com/brands/shelly) (brand)
- [Shelly i4 Gen4](https://smarthomecanon.com/devices/shelly-i4-gen4) (device)
- [Shelly i4 Gen3](https://smarthomecanon.com/devices/shelly-i4-gen3) (device)
- [Shelly Plus i4 DC](https://smarthomecanon.com/devices/shelly-plus-i4-dc) (device)

## Sources

[^1]: Shelly Gen4 devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gen4-devices (manufacturer, checked 2026-10-13)
[^2]: Shelly i4 Gen4 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-i4-gen4 (manufacturer, checked 2026-10-13)
[^3]: Shelly i4 Gen4 - Shelly Europe shop. https://www.shelly.com/products/shelly-i4-gen4 (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 Gen3 devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gen3-devices (manufacturer, checked 2026-10-13)
[^6]: Shelly i4 Gen3 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-i4-gen3 (manufacturer, checked 2026-10-13)
[^7]: Shelly i4 Gen3 - Shelly Europe shop. https://www.shelly.com/products/shelly-i4-gen3 (manufacturer, checked 2026-10-13)
[^8]: Shelly Plus devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-plus-devices (manufacturer, checked 2026-10-13)
[^9]: Shelly Plus i4 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-plus-i4 (manufacturer, checked 2026-10-13)
[^10]: Shelly Plus i4 - Shelly Europe shop. https://www.shelly.com/products/shelly-plus-i4 (manufacturer, checked 2026-10-14)
[^11]: Shelly Plus i4DC - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-plus-i4dc (manufacturer, checked 2026-10-13)
[^12]: Shelly Plus i4 DC - Shelly Europe shop. https://www.shelly.com/products/shelly-plus-i4-dc (manufacturer, checked 2026-10-13)
[^13]: Shelly Gen1 devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gen1-devices (manufacturer, checked 2026-10-13)
[^14]: Shelly Button 1 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-button-1 (manufacturer, checked 2026-10-13)
[^15]: Shelly Button 1 List - Shelly Europe shop. https://www.shelly.com/products/shelly-button-2 (manufacturer, checked 2026-10-13)