Shelly Gas CNG
£52.59
The Shelly Gas CNG is a mains-powered Wi-Fi gas detector with a sensitive module specifically for compressed natural gas leaks, giving a flashing LED and sound alarm when triggered. It includes a jack output for connecting an automatic shut-off valve manipulator, so a detected leak can cut gas supply as well as alert you.
- Detects CNG leaks at 6% LEL sensitivity
- LED flash and sound alarm on detection
- Valve manipulator output for automatic shut-off
- Housed in a flame-resistant enclosure for added safety
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Buy the Shelly Gas CNG online in the UK from ShellyUK — genuine Shelly stock with fast UK delivery.
Shelly Gas has built-in highly sensitive modules for measuring the air for Compressed Natural Gas (CNG) leaks.
Detects CNG leaks at 6% LEL sensitivity
LED flash and sound alarm on detection

Valve manipulator output for automatic shut-off
Housed in a flame-resistant enclosure for added safety
Where you'd use it
Kitchen Gas Leak Alarm
Mount near a gas hob to detect a CNG leak and sound the local alarm before it becomes dangerous.
Automatic Gas Shut-Off
Connect the valve manipulator output to a shut-off valve so gas supply is cut automatically the moment a leak is detected, not just alarmed.
Remote Leak Notification
Get a WiFi alert if the sensor triggers while you're out of the house, rather than only relying on the local sound and light alarm.
Specification
Connectivity
- Wireless/WiFi Protocol
- 802.11 b/g/n (2.4 GHz)
- Radio signal power
- 1mW
- Operational range (depending on local construction) • up to
- 50 m outdoors • up to 30 m indoors
Protection & Safety
- Device protection Flame Resistant
Physical & Build
- (H x W x L) not including plug
- 89.5 x 89.5 x 38 mm
Environmental
- Operational temperature
- -10ºC to +50ºC
Power & Electrical
- Power supply
- 110-230V ±10%, 50/60Hz
- Device power consumption < 3W
Other
- Gas detection Yes - Natural
- Alarm indicator LED Flash & Sound
- Alarm sensitivity
- 6% LEL
- Sound level ≥70dB
- Valve manipulator jack output
- 11-13V, 500mA
- Complies with EU standards • RE Directive
- 2014/53/EU • LVD 2014/35/EU • EMC 2004/108/WE • RoHS2 2011/65/U
- Frequency
- 2400 – 2484 MHz








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