Gas Detectors · Head to head

Shelly GAS (CNG) vs Zemismart ZM-GA100 Zigbee Gas Detector

Full Smart Gas Detectors comparison in 2026

Data from Amazon and official Shelly and Zemismart sites.
2026 verdict
Shelly GAS (CNG) is the more complete option versus Zemismart ZM-GA100 Zigbee Gas Detector in 2026, helped most by integrations and valve Shut-off.
Shelly GAS (CNG)
Winner
Shelly GAS (CNG)
Buy on Amazon UKCheck price
It separates itself most clearly on integrations and valve Shut-off, while still looking better on its broader overall balance. Zemismart ZM-GA100 Zigbee Gas Detector is still relevant if you care most about alerts, but Shelly GAS (CNG) is the stronger recommendation overall. That keeps the verdict firmly in favor of Shelly GAS (CNG).
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FeatureShelly GAS (CNG)Zemismart ZM-GA100 Zigbee Gas DetectorWinner
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantHome AssistantShelly GAS (CNG)
AlertsApp Notifications, Fault AlertsApp Notifications, Voice Alerts, Low Battery AlertsZemismart ZM-GA100 Zigbee Gas Detector
Valve Shut-offYESNOShelly GAS (CNG)
Connectivity2.4 GHz WiFiZigbeeTie
DetectionNatural Gas, Concentration ReadingNatural Gas, Concentration ReadingTie
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
  • + Valve Shut-off: YES
  • - Alerts: App Notifications, Fault Alerts vs App Notifications, Voice Alerts, Low Battery Alerts

Frequently Asked Questions

Which is better overall: Shelly GAS (CNG) or Zemismart ZM-GA100 Zigbee Gas Detector?

Shelly GAS (CNG) has the stronger overall profile in this comparison, especially for integrations and valve Shut-off.

What is the biggest difference between Shelly GAS (CNG) and Zemismart ZM-GA100 Zigbee Gas Detector?

Integrations is one of the clearest differences: Shelly GAS (CNG) lists Google Home, Alexa, Samsung SmartThings, Home Assistant, while Zemismart ZM-GA100 Zigbee Gas Detector lists Home Assistant.

Who should buy Shelly GAS (CNG)?

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

Who should buy Zemismart ZM-GA100 Zigbee Gas Detector?

Choose Zemismart ZM-GA100 Zigbee Gas Detector if your priority is alerts and that matters more than integrations.

Full comparison table

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