Gas Detectors · Head to head

Heiman WS2CG Series Combustible Gas Detector vs Shelly GAS (CNG)

Full Smart Gas Detectors comparison in 2026

Data from Amazon and official Heiman and Shelly sites.
2026 verdict
Between Shelly GAS (CNG) and Heiman WS2CG Series Combustible Gas Detector, Shelly GAS (CNG) is the better overall pick in 2026, leading on integrations.
Shelly GAS (CNG)
Winner
Shelly GAS (CNG)
Buy on Amazon UKCheck price
The comparison tilts its way because of integrations, with its broader overall balance keeping it in front. Heiman WS2CG Series Combustible Gas Detector remains a niche alternative if alerts matter more than the rest of the comparison. As a general recommendation, Shelly GAS (CNG) comes out on top.
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FeatureHeiman WS2CG Series Combustible Gas DetectorShelly GAS (CNG)Winner
IntegrationsHome AssistantGoogle Home, Alexa, Samsung SmartThings, Home AssistantShelly GAS (CNG)
AlertsApp Notifications, Voice Alerts, Fault AlertsApp Notifications, Fault AlertsHeiman WS2CG Series Combustible Gas Detector
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
DetectionNatural Gas, LPG & PropaneNatural Gas, Concentration ReadingTie
Valve Shut-offYESYESTie
Digital DisplayNONOTie
InterconnectNONOTie
Winner
Shelly

Shelly GAS (CNG)

Price unavailable right now
Buy on Amazon UKCheck price
  • + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
  • - Alerts: App Notifications, Fault Alerts vs App Notifications, Voice Alerts, Fault Alerts

Frequently Asked Questions

Which is better overall: Heiman WS2CG Series Combustible Gas Detector or Shelly GAS (CNG)?

Shelly GAS (CNG) has the stronger overall profile in this comparison, especially for integrations.

What is the biggest difference between Heiman WS2CG Series Combustible Gas Detector and Shelly GAS (CNG)?

Integrations is one of the clearest differences: Heiman WS2CG Series Combustible Gas Detector lists Home Assistant, while Shelly GAS (CNG) lists Google Home, Alexa, Samsung SmartThings, Home Assistant.

Who should buy Heiman WS2CG Series Combustible Gas Detector?

Choose Heiman WS2CG Series Combustible Gas Detector if your priority is alerts and that matters more than integrations.

Who should buy Shelly GAS (CNG)?

Choose Shelly GAS (CNG) if your priority is integrations and that matters more than alerts.

Full comparison table

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  • 7 Gas Detectors
  • 44 specs compared
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