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

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. 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.

Heiman WS2CG Series Combustible Gas Detector

Price unavailable right now

Winner

5% OFF

€59.29

€62.74

Feature	Heiman WS2CG Series Combustible Gas Detector	Shelly GAS (CNG)	Winner
Integrations	Home Assistant	Google Home, Alexa, Samsung SmartThings, Home Assistant	Shelly GAS (CNG)
Alerts	App Notifications, Voice Alerts, Fault Alerts	App Notifications, Fault Alerts	Heiman WS2CG Series Combustible Gas Detector
Connectivity	2.4 GHz WiFi	2.4 GHz WiFi	Tie
Detection	Natural Gas, LPG & Propane	Natural Gas, Concentration Reading	Tie
Valve Shut-off	YES	YES	Tie
Digital Display	NO	NO	Tie
Interconnect	NO	NO	Tie

Price unavailable right now

+ Alerts: App Notifications, Voice Alerts, Fault Alerts
- Integrations: Home Assistant vs Google Home, Alexa, Samsung SmartThings, Home Assistant

Winner

5% OFF

€59.29

€62.74

+ Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- Alerts: App Notifications, Fault Alerts vs App Notifications, Voice Alerts, Fault Alerts

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.

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