# Shelly Gas CNG

*Shelly*

> The Shelly Gas CNG is a mains-powered Wi-Fi gas detector for compressed natural gas. It sounds a 70 dB alarm and can drive a valve add-on. It suits Alexa users through an integration (the maker's cloud). Home Assistant users reach it through an integration (local Wi-Fi control).

- Canonical page: https://smarthomecanon.com/devices/shelly-gas-cng
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Shelly](https://smarthomecanon.com/brands/shelly) |
| Category | Smoke or gas detector |
| Status | Current[^1][^2] |
| Generation | Gen1[^3] |
| Model code | unknown |
| Sensing | Compressed natural gas (CNG), alarm at 6% LEL[^4] |
| Power | Mains, 110-230 V~[^4] |
| Radio | Wi-Fi 802.11 b/g/n[^4] |
| Matter | unknown |
| Local API | REST API, CoAP and MQTT[^4][^5] |

## Integration paths

**How the Shelly Gas CNG connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Wi-Fi local](https://smarthomecanon.com/protocols/wifi-local) | withheld | withheld | unknown |
| [Wi-Fi cloud](https://smarthomecanon.com/protocols/wifi-cloud) | Vendor cloud account[^4] | No[^4] | unknown |

**Platform support for the Shelly Gas CNG**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Wi-Fi local | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | Shelly |
| Wi-Fi local | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | cloud.shelly |
| Wi-Fi cloud | [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) | Via integration[^4] |  |

## Related pages

- [Shelly sensors](https://smarthomecanon.com/lines/shelly-sensors) (line)
- [Shelly](https://smarthomecanon.com/brands/shelly) (brand)
- [Wi-Fi with local control](https://smarthomecanon.com/protocols/wifi-local) (protocol)
- [Wi-Fi through a cloud service](https://smarthomecanon.com/protocols/wifi-cloud) (protocol)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)
- [Amazon Alexa](https://smarthomecanon.com/platforms/alexa) (platform)

## Sources

[^1]: Shelly GAS (CNG) - Shelly Europe shop. https://www.shelly.com/products/shelly-gas-sensor-cng (manufacturer, checked 2026-10-13)
[^2]: 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)
[^3]: Shelly Gen1 devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gen1-devices (manufacturer, checked 2026-10-13)
[^4]: Shelly Gas - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-gas (manufacturer, checked 2026-10-13)
[^5]: Shelly Technical Documentation. https://shelly-api-docs.shelly.cloud/ (manufacturer, checked 2026-10-13)