Shelly GAS (CNG)

Device identification

Name: Shelly GAS

Type: Smart gas sensor

Variants: CNG (Compressed Natural Gas) and LPG (Liquefied Petroleum Gas)

Short description

Shelly GAS is a Wi-Fi-operated smart gas sensor designed to detect leaks of Compressed Natural Gas (CNG) or Liquefied Petroleum Gas (LPG).
Many home appliances rely on gas, but few homes include dedicated gas leak detection. Shelly GAS provides additional safety and protection for your family by
delivering real-time alerts through sound, light, and app notifications. With its long lifespan, high precision, and flame-resistant design,
it ensures reliable operation and early warning in case of potential gas leaks.

Main features

• Wi-Fi connected smart gas detector – no hub required
• Available in two variants: CNG and LPG detection
• Instant sound and light alarm when gas leak is detected
• App notifications for remote alerts and status updates
• Flame-resistant shell for enhanced safety
• Can be integrated with all other Shelly devices for automation
• Compatible with Android, iOS, Amazon Alexa, and major home automation systems via MQTT, CoAP, and REST API
• Supports DIY and Arduino-based automation projects

Use cases

• Gas leak detection in kitchens, boiler rooms, or garages
• Safety monitoring for gas-powered appliances
• Integration with other Shelly devices to trigger automatic actions, such as shutting off gas valves or activating ventilation
• Home automation scenarios for fire and gas safety systems
• Smart alerts and notifications for peace of mind, even when away from home

Connectivity

Wi-Fi (no hub required)

Compatible with MQTT, CoAP, and REST API protocols

Safety function

Flame-resistant enclosure and real-time sound/light alarms for hazardous gas leak detection.

User interface

Outputs:

• Sound alarm – loud audio warning when gas leak detected

• Light indicator – visual alert for gas presence

• App notification – immediate push alert to connected devices

Shelly GAS provides reliable gas detection and peace of mind, ensuring a safer home environment through modern smart connectivity.

Power supply

AC: 110–230 V ±10%, 50/60 Hz

DC: No

Special functions

Gas detector: Compressed Natural Gas (CNG) / Liquefied Petroleum Gas (LPG)

Device temperature protection: Yes – Flame resistant

Features

Alarm indicator: LED flash & sound

Alarm sensitivity: 6% LEL

Sound level: ≥70 dB

Valve manipulator jack output: 11–13 V, 500 mA

Operational temperature: −10 °C to +50 °C

Device power consumption: < 3 W

Intelligent On/Off: Yes

Local and remote control: Yes

Connectivity

Wireless / Wi-Fi protocol: 802.11 b/g/n

Radio frequency: 2400–2484 MHz

Range: Up to 30 m indoors; 50 m outdoors (depending on building materials)

Dimensions

Size: 89.5×89.5×38 mm (plug not included)