We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact white gas detector with LED indicator and sound alarm, plugs directly into wall socket

Shelly

Shelly Gas CNG detector Wi-Fi relay

SKU CH-VPQZ-ZS75J

Wi-Fi connected CNG detector with sound and light alarms, flame-resistant housing and app alerts for home safety

  • Parts2 Years
  • Detects CNG leaks early with certified high-sensitivity sensor
  • Instant sound, light and phone alerts when gas is detected
  • Connects directly to Wi-Fi without a separate hub
  • Flame-resistant casing protects the unit during an incident
  • Plugs into any socket for wire-free installation anywhere

Compact CNG Detector for Home Safety

The Shelly Gas CNG detector is a certified sensor that monitors for compressed natural gas leaks in residential settings. It plugs directly into a mains socket near gas appliances and connects to the home Wi-Fi network without requiring a separate hub. When a leak is detected, the unit triggers a built-in sound and light alarm while simultaneously sending a notification to the companion mobile app.

Upgrades from Basic Plug-In Alarms

This device replaces standalone gas alarms that only sound locally and offer no remote awareness. The jump is worth it for households that want phone alerts when away from the property or the ability to link detection events to automated scenes through the Shelly app or supported voice assistants. Its flame-resistant casing and certified detection sensitivity add a layer of reliability not found in uncertified alternatives.

Suits Homeowners Wanting Connected Monitoring

It suits homeowners or tenants who use natural gas appliances and want real-time leak notifications on iOS or Android devices. It also fits users building automation routines that respond to gas events. Buyers who need detection for liquefied petroleum gas instead should choose the LPG version of this sensor. Those requiring hard-wired installation, battery backup, or integration with a dedicated security panel rather than Wi-Fi will need a different class of device.

Highlights

  • Detects CNG leaks early with certified high-sensitivity sensor
  • Instant sound, light and phone alerts when gas is detected
  • Connects directly to Wi-Fi without a separate hub
  • Flame-resistant casing protects the unit during an incident
  • Plugs into any socket for wire-free installation anywhere

Specifications

BrandShelly
Parts2 Years

Questions about this item

What type of power socket does the Shelly Gas CNG detector plug into?

It plugs directly into a standard mains power socket near the gas appliance, with no wiring required.

How do I connect the detector to my phone for alerts?

Power the unit, open the Shelly app on iOS or Android, and follow the in-app steps to join it to your Wi-Fi network; no separate hub is needed.

Does the sensor need periodic replacement or recalibration?

The manufacturer specifies a two-year parts lifetime, after which the detector should be replaced to maintain certified sensitivity.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.