The Smart Device Compare comparison

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

Understand the differences. Decide what matters to your home.

Before you compare every specification

Key differences between Shelly GAS (CNG) and Zemismart ZM-GA100 Zigbee Gas Detector

A summary of selected recorded differences between these gas detectors. Check the full specification table below for details and conditions.

Feature differences among your selected devices

Voice Alerts (alerts): Shelly GAS (CNG) — No; Zemismart ZM-GA100 Zigbee Gas Detector — Yes (70 dB local voice alarm).
2.4 GHz Wi-Fi (connectivity): Shelly GAS (CNG) — Yes (802.11 b/g/n, 2400-2484 MHz, no hub required); Zemismart ZM-GA100 Zigbee Gas Detector — No.
Alexa (integrations): Shelly GAS (CNG) — Yes; Zemismart ZM-GA100 Zigbee Gas Detector — No (Neither the Alexa smart home API nor the Google Home SensorState trait defines a combustible gas sensor type, so the alarm cannot be exposed to it).
Google Home (integrations): Shelly GAS (CNG) — Yes; Zemismart ZM-GA100 Zigbee Gas Detector — No (Neither the Alexa smart home API nor the Google Home SensorState trait defines a combustible gas sensor type, so the alarm cannot be exposed to it).

Specifications to check side by side

Zigbee (connectivity): Shelly GAS (CNG) — No; Zemismart ZM-GA100 Zigbee Gas Detector — Zigbee Hub required (Needs a Tuya Zigbee hub to reach the app).

Information still to confirm

11 of 37 comparison fields lack a resolved value for at least one selected device. Missing information is not evidence that a feature is absent.
Check the full table and manufacturer documentation before ruling out a device.

These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.

Compare capabilities, compatibility and setup requirements.

Option 1 · Shelly

Shelly GAS (CNG)

Catalog update date not recorded

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Option 2 · Zemismart

Zemismart ZM-GA100 Zigbee Gas Detector

Catalog update date not recorded

View full device profile

What the catalog tells us

Understand the tradeoffs.

These counts describe the available data, not a quality score. More features do not automatically make a better device.

7differences with recorded values for every device

11rows with missing or unspecified information

Your priorities, side by side

Focus on what changes.

Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.

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Showing 37 of 37 rows. “Not recorded” does not mean “No”.

Reading layout

Alerts

Alarm Volume

Shelly GAS (CNG)

70 dB

Zemismart ZM-GA100 Zigbee Gas Detector

70 dB

Manufacturer source

The manufacturer states a 70 dB local alarm.

Zemismart ZM-GA100 Zigbee Gas Detector manufacturer product page →

Source section: Product description
Model: Zemismart ZM-GA100 Zigbee Gas Detector
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Requires a compatible Zigbee hub. The source does not establish LPG detection or provide an alarm measurement distance.

Document check only; not a hands-on test or verification of every regional or firmware variant.

App Notifications

Shelly GAS (CNG)

Yes

Zemismart ZM-GA100 Zigbee Gas Detector

Yes

Manufacturer source

The Tuya or Smart Life app can receive alerts.

Zemismart ZM-GA100 Zigbee Gas Detector manufacturer product page →

Source section: Product description
Model: Zemismart ZM-GA100 Zigbee Gas Detector
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Requires a compatible Zigbee hub. The source does not establish LPG detection or provide an alarm measurement distance.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Real-time push alerts through Tuya Smart or Smart Life

Fault Alerts

Shelly GAS (CNG): Yes
Catalog note
The sensor state is reported as warmup, normal, fault or unknown
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Low Battery Alerts

Shelly GAS (CNG): Not applicable / unspecified
Zemismart ZM-GA100 Zigbee Gas Detector: Yes
Catalog note
The app shows a low battery reminder

Voice Alerts

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: Yes
Catalog note
70 dB local voice alarm

Connectivity

2.4 GHz Wi-Fi

Shelly GAS (CNG): Yes
Catalog note
802.11 b/g/n, 2400-2484 MHz, no hub required
Zemismart ZM-GA100 Zigbee Gas Detector: No

5 GHz Wi-Fi

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

Bluetooth

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

Other

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

Thread

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

Z Wave

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

Zigbee

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: Zigbee Hub required
Catalog note
Needs a Tuya Zigbee hub to reach the app

Detection

Alarm Threshold

Shelly GAS (CNG): 6% LEL
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Carbon Monoxide

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

Concentration Reading

Shelly GAS (CNG): Yes
Catalog note
The device reports the measured concentration in ppm through the app and the local API
Zemismart ZM-GA100 Zigbee Gas Detector: Yes
Catalog note
Measuring range of 0 to 100% LEL

Lpg Propane

Shelly GAS (CNG): No
Catalog note
Shelly sells a separate LPG version for propane and butane
Zemismart ZM-GA100 Zigbee Gas Detector: No

Natural Gas

Shelly GAS (CNG)

Yes

Catalog note

Calibrated for compressed natural gas (methane)

Zemismart ZM-GA100 Zigbee Gas Detector

Yes

Manufacturer source

The specified target gas is methane in piped natural gas.

Zemismart ZM-GA100 Zigbee Gas Detector manufacturer product page →

Source section: Product description
Model: Zemismart ZM-GA100 Zigbee Gas Detector
Region: Manufacturer product page; no universal regional compatibility implied
Firmware: Not specified by this source
Checked: 2026-10-04

Requires a compatible Zigbee hub. The source does not establish LPG detection or provide an alarm measurement distance.

Document check only; not a hands-on test or verification of every regional or firmware variant.

Catalog note

Calibrated for pipeline natural gas (methane)

Sensor Life

Shelly GAS (CNG): Not recorded
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Sensor Type

Shelly GAS (CNG): Not recorded
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Features

Automations

Shelly GAS (CNG): Yes
Catalog note
Scenes can react to the alarm and drive any other Shelly device
Zemismart ZM-GA100 Zigbee Gas Detector: Yes
Catalog note
The alarm state can be used in Tuya smart scenes

Certification

Shelly GAS (CNG): Not recorded
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Digital Display

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

History Records

Shelly GAS (CNG): Not recorded
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Interconnect

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

Mute Silence

Shelly GAS (CNG): Yes
Catalog note
Mute and unmute the sounder remotely
Zemismart ZM-GA100 Zigbee Gas Detector: Yes
Catalog note
Mute button on the front of the unit

Self Test

Shelly GAS (CNG): Yes
Catalog note
Self-test can be triggered from the app or the local API
Zemismart ZM-GA100 Zigbee Gas Detector: Yes
Catalog note
Self-check button on the front of the unit

Valve Shut Off

Shelly GAS (CNG): Yes
Catalog note
11-13V 500mA jack output drives the Shelly Gas Add-on valve manipulator, which is sold separately
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Integrations

Alexa

Shelly GAS (CNG): Yes
Zemismart ZM-GA100 Zigbee Gas Detector: No
Catalog note
Neither the Alexa smart home API nor the Google Home SensorState trait defines a combustible gas sensor type, so the alarm cannot be exposed to it

Apple Home

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

Google Home

Shelly GAS (CNG): Yes
Zemismart ZM-GA100 Zigbee Gas Detector: No
Catalog note
Neither the Alexa smart home API nor the Google Home SensorState trait defines a combustible gas sensor type, so the alarm cannot be exposed to it

Home Assistant

Shelly GAS (CNG): Yes
Catalog note
Local control over the HTTP, MQTT and CoAP APIs
Zemismart ZM-GA100 Zigbee Gas Detector: Yes
Catalog note
Tuya device, covered by the gas alarm category of the official Home Assistant Tuya integration

Matter

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: No

SmartThings

Shelly GAS (CNG): Yes
Zemismart ZM-GA100 Zigbee Gas Detector: No

Power

Battery Backup

Shelly GAS (CNG): No
Zemismart ZM-GA100 Zigbee Gas Detector: Not applicable / unspecified

Battery Life

Shelly GAS (CNG): Not applicable / unspecified
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Battery Type

Shelly GAS (CNG): Not applicable / unspecified
Zemismart ZM-GA100 Zigbee Gas Detector: Not recorded

Wired

Shelly GAS (CNG): Yes
Catalog note
Plugs straight into a socket, 110-230V AC 50/60Hz, under 3 W
Zemismart ZM-GA100 Zigbee Gas Detector: No
Catalog note
Zemismart documents a low battery reminder and no mains connection, and the product photos show no power lead

Specifications for Shelly GAS (CNG) versus Zemismart ZM-GA100 Zigbee Gas Detector
Specification	Shelly GAS (CNG)	Zemismart ZM-GA100 Zigbee Gas Detector
Alerts
Alarm Volume	70 dB	70 dB Manufacturer source The manufacturer states a 70 dB local alarm. Zemismart ZM-GA100 Zigbee Gas Detector manufacturer product page → Source section Product description Model Zemismart ZM-GA100 Zigbee Gas Detector Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Requires a compatible Zigbee hub. The source does not establish LPG detection or provide an alarm measurement distance. Document check only; not a hands-on test or verification of every regional or firmware variant.
App Notifications	Yes	Yes Manufacturer source The Tuya or Smart Life app can receive alerts. Zemismart ZM-GA100 Zigbee Gas Detector manufacturer product page → Source section Product description Model Zemismart ZM-GA100 Zigbee Gas Detector Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Requires a compatible Zigbee hub. The source does not establish LPG detection or provide an alarm measurement distance. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Real-time push alerts through Tuya Smart or Smart Life
Fault Alerts	Yes Catalog note The sensor state is reported as warmup, normal, fault or unknown	Not recorded
Low Battery Alerts	Not applicable / unspecified	Yes Catalog note The app shows a low battery reminder
Voice Alerts	No	Yes Catalog note 70 dB local voice alarm
Connectivity
2.4 GHz Wi-Fi	Yes Catalog note 802.11 b/g/n, 2400-2484 MHz, no hub required	No
5 GHz Wi-Fi	No	No
Bluetooth	No	No
Other	No	No
Thread	No	No
Z Wave	No	No
Zigbee	No	Zigbee Hub required Catalog note Needs a Tuya Zigbee hub to reach the app
Detection
Alarm Threshold	6% LEL	Not recorded
Carbon Monoxide	No	No
Concentration Reading	Yes Catalog note The device reports the measured concentration in ppm through the app and the local API	Yes Catalog note Measuring range of 0 to 100% LEL
Lpg Propane	No Catalog note Shelly sells a separate LPG version for propane and butane	No
Natural Gas	Yes Catalog note Calibrated for compressed natural gas (methane)	Yes Manufacturer source The specified target gas is methane in piped natural gas. Zemismart ZM-GA100 Zigbee Gas Detector manufacturer product page → Source section Product description Model Zemismart ZM-GA100 Zigbee Gas Detector Region Manufacturer product page; no universal regional compatibility implied Firmware Not specified by this source Checked 2026-10-04 Requires a compatible Zigbee hub. The source does not establish LPG detection or provide an alarm measurement distance. Document check only; not a hands-on test or verification of every regional or firmware variant. Catalog note Calibrated for pipeline natural gas (methane)
Sensor Life	Not recorded	Not recorded
Sensor Type	Not recorded	Not recorded
Features
Automations	Yes Catalog note Scenes can react to the alarm and drive any other Shelly device	Yes Catalog note The alarm state can be used in Tuya smart scenes
Certification	Not recorded	Not recorded
Digital Display	No	No
History Records	Not recorded	Not recorded
Interconnect	No	No
Mute Silence	Yes Catalog note Mute and unmute the sounder remotely	Yes Catalog note Mute button on the front of the unit
Self Test	Yes Catalog note Self-test can be triggered from the app or the local API	Yes Catalog note Self-check button on the front of the unit
Valve Shut Off	Yes Catalog note 11-13V 500mA jack output drives the Shelly Gas Add-on valve manipulator, which is sold separately	Not recorded
Integrations
Alexa	Yes	No Catalog note Neither the Alexa smart home API nor the Google Home SensorState trait defines a combustible gas sensor type, so the alarm cannot be exposed to it
Apple Home	No	No
Google Home	Yes	No Catalog note Neither the Alexa smart home API nor the Google Home SensorState trait defines a combustible gas sensor type, so the alarm cannot be exposed to it
Home Assistant	Yes Catalog note Local control over the HTTP, MQTT and CoAP APIs	Yes Catalog note Tuya device, covered by the gas alarm category of the official Home Assistant Tuya integration
Matter	No	No
SmartThings	Yes	No
Power
Battery Backup	No	Not applicable / unspecified
Battery Life	Not applicable / unspecified	Not recorded
Battery Type	Not applicable / unspecified	Not recorded
Wired	Yes Catalog note Plugs straight into a socket, 110-230V AC 50/60Hz, under 3 W	No Catalog note Zemismart documents a low battery reminder and no mains connection, and the product photos show no power lead

Know what’s behind the comparison.

The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.

Read our comparison methodology