Winner
Price unavailable right now
Data from the official Heiman and Shelly sites.
2026 verdict
Across the 2026 comparison, Heiman WS2CG Series Combustible Gas Detector earns the nod over Shelly GAS (LPG) on the strength of detection and alerts.
It separates itself most clearly on detection and alerts, while still looking better on its broader overall balance. There is still a case for Shelly GAS (LPG), but mainly if integrations are what you value most. That is why the final call still favors Heiman WS2CG Series Combustible Gas Detector.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Heiman WS2CG Series Combustible Gas Detector | Shelly GAS (LPG) | Winner |
|---|---|---|---|
| Integrations | Home Assistant | Google Home, Alexa, Samsung SmartThings, Home Assistant | Shelly GAS (LPG) |
| Detection | Natural Gas, LPG & Propane | LPG & Propane, Concentration Reading | Heiman WS2CG Series Combustible Gas Detector |
| 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 |
| Valve Shut-off | YES | YES | Tie |
| Digital Display | NO | NO | Tie |
| Interconnect | NO | NO | Tie |
Winner
Price unavailable right now
- + Detection: Natural Gas, LPG & Propane
- + Alerts: App Notifications, Voice Alerts, Fault Alerts
- - Integrations: Home Assistant vs Google Home, Alexa, Samsung SmartThings, Home Assistant
- + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- - Detection: LPG & Propane, Concentration Reading vs Natural Gas, LPG & Propane
- - 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 (LPG)?
Heiman WS2CG Series Combustible Gas Detector has the stronger overall profile in this comparison, especially for detection and alerts.
What is the biggest difference between Heiman WS2CG Series Combustible Gas Detector and Shelly GAS (LPG)?
Integrations is one of the clearest differences: Heiman WS2CG Series Combustible Gas Detector lists Home Assistant, while Shelly GAS (LPG) 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 detection and alerts and that matters more than integrations.
Who should buy Shelly GAS (LPG)?
Choose Shelly GAS (LPG) if your priority is integrations and that matters more than detection.
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- 7 Gas Detectors
- 45 specs compared
- 42 filters
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- Buttons
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Camera
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Wall Display XL
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BLU Door/Window ZB
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EM Gen3
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EM Gen4
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GAS (CNG)
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BLU Motion ZB
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Blu Motion