The Smart Device Compare comparison

Google Nest Protect (Wired) vs Heiman Matter Smoke Detector S1-TM

Understand the differences. Decide what matters to your home.

Before you compare every specification

Key differences between Google Nest Protect (Wired) and Heiman Matter Smoke Detector S1-TM

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

Feature differences among your selected devices

Co Alerts (alerts): Google Nest Protect (Wired) — Yes (Carbon monoxide is poisonous but you can't see it or smell it. Nest Protect has a carbon monoxide sensor available that lasts 10 years.); Heiman Matter Smoke Detector S1-TM — No.
2.4 GHz Wi-Fi (connectivity): Google Nest Protect (Wired) — Yes; Heiman Matter Smoke Detector S1-TM — No.
Bluetooth (connectivity): Google Nest Protect (Wired) — Yes; Heiman Matter Smoke Detector S1-TM — No.
Automations (features): Google Nest Protect (Wired) — No; Heiman Matter Smoke Detector S1-TM — Yes (Local Matter automations, no cloud required).

Specifications to check side by side

Other (connectivity): Google Nest Protect (Wired) — 802.15.4 wireless interconnect (Nest Weave interconnect between Protects, keeps working without Wi-Fi); Heiman Matter Smoke Detector S1-TM — No.
Thread (connectivity): Google Nest Protect (Wired) — No; Heiman Matter Smoke Detector S1-TM — Thread Border Router required.
Battery Type (power): Google Nest Protect (Wired) — 3x AA; Heiman Matter Smoke Detector S1-TM — CR123A.

Information still to confirm

2 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 · Google

Google Nest Protect (Wired)

Last updated October 2026

View full device profile

Option 2 · Heiman

Heiman Matter Smoke Detector S1-TM

Last updated October 2026

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.

18differences with recorded values for every device

2rows with missing or unspecified information

Consider your setup

Apple Home

Google Nest Protect (Wired)No
Heiman Matter Smoke Detector S1-TMYes

Confirm which features appear in Apple Home and whether extra hardware or a subscription is needed for your intended use.

Inspect the specifications

Consider your setup

Matter

Google Nest Protect (Wired)No
Heiman Matter Smoke Detector S1-TMYes

Confirm the exact device type and the features exposed in your chosen platform. Protocol support does not establish feature parity across apps.

Inspect the specifications

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.

Differences onlyMy priorities (0)

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

Reading layout

Alerts

Air Quality Alerts

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: No

Co Alerts

Google Nest Protect (Wired): Yes
Catalog note
Carbon monoxide is poisonous but you can't see it or smell it. Nest Protect has a carbon monoxide sensor available that lasts 10 years.
Heiman Matter Smoke Detector S1-TM: No

Fire Alerts

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Local 85 dB alarm plus notifications through the Matter controller app

Low Battery Alerts

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: Yes

Temperature Alerts

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: No

Connectivity

2.4 GHz Wi-Fi

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: No

5 GHz Wi-Fi

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: No

Bluetooth

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: No

Other

Google Nest Protect (Wired): 802.15.4 wireless interconnect
Catalog note
Nest Weave interconnect between Protects, keeps working without Wi-Fi
Heiman Matter Smoke Detector S1-TM: No

Thread

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: Thread Border Router required

Z Wave

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: No

Zigbee

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: No

Display

Screen

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: No

Screen Type

Google Nest Protect (Wired): Not applicable / unspecified
Heiman Matter Smoke Detector S1-TM: Not applicable / unspecified

Features

Automations

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Local Matter automations, no cloud required

Built In Light

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: No

Built In Siren

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
85 dB at 10 ft

Pathlight

Google Nest Protect (Wired): Yes
Catalog note
When you walk under Nest Protect at night, it will light your way. You can choose different light levels or turn Pathlight off entirely in the app.
Heiman Matter Smoke Detector S1-TM: No

Steam Check

Google Nest Protect (Wired): Yes
Catalog note
Has your alarm ever yelled at you for taking a shower? Nest Protect uses custom algorithms and a humidity sensor to look for steam, so you can enjoy a nice, quiet shower.
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Dual-beam sensing tells smoke apart from steam and cooking fumes to cut false alarms

Tests Itself

Google Nest Protect (Wired): Yes
Catalog note
Nest Protect checks its batteries and sensors over 400 times a day. And it uses Sound Check to quietly test its speaker and horn once a month
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Push to test button, and the test can be triggered remotely from Home Assistant

Integrations

Alexa

Google Nest Protect (Wired): No
Catalog note
Nest Protect has never been exposed to Alexa: Google keeps it inside the Google Home app
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Via Matter

Apple Home

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Via Matter

Google Home

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Via Matter

Home Assistant

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Via Matter

Matter

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Matter 1.4 over Thread; Heiman holds CSA Matter certificates for its smoke sensors with temperature and humidity reporting

SmartThings

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Via Matter

Power

Battery Life

Google Nest Protect (Wired): Not applicable / unspecified
Heiman Matter Smoke Detector S1-TM: 3.5 years

Battery Type

Google Nest Protect (Wired): 3x AA
Heiman Matter Smoke Detector S1-TM: CR123A

Wired

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: No

Sensors

Air Quality

Google Nest Protect (Wired): No
Heiman Matter Smoke Detector S1-TM: No

Ambient Light

Google Nest Protect (Wired): Yes
Catalog note
Detect when the room is dark so it can automatically turn on the Pathlight and Nightly Promise features.
Heiman Matter Smoke Detector S1-TM: No

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: No

Humidity

Google Nest Protect (Wired): Yes
Catalog note
Enables the Steam Check feature to reduce nuisance alarms caused by things like steam from your shower.
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Built-in humidity sensor reported over Matter

Motion

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: No

Occupancy

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: No

Smoke

Google Nest Protect (Wired): Yes
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Dual-beam photoelectric sensor, UL 217 10th Edition certified

Temperature

Google Nest Protect (Wired): Yes
Catalog note
Detect sudden rises in room temperature.
Heiman Matter Smoke Detector S1-TM: Yes
Catalog note
Built-in temperature sensor reported over Matter

Specifications for Google Nest Protect (Wired) versus Heiman Matter Smoke Detector S1-TM
Specification	Google Nest Protect (Wired)	Heiman Matter Smoke Detector S1-TM
Alerts
Air Quality Alerts	No	No
Co Alerts	Yes Catalog note Carbon monoxide is poisonous but you can't see it or smell it. Nest Protect has a carbon monoxide sensor available that lasts 10 years.	No
Fire Alerts	Yes	Yes Catalog note Local 85 dB alarm plus notifications through the Matter controller app
Low Battery Alerts	Yes	Yes
Temperature Alerts	No	No
Connectivity
2.4 GHz Wi-Fi	Yes	No
5 GHz Wi-Fi	No	No
Bluetooth	Yes	No
Other	802.15.4 wireless interconnect Catalog note Nest Weave interconnect between Protects, keeps working without Wi-Fi	No
Thread	No	Thread Border Router required
Z Wave	No	No
Zigbee	No	No
Display
Screen	No	No
Screen Type	Not applicable / unspecified	Not applicable / unspecified
Features
Automations	No	Yes Catalog note Local Matter automations, no cloud required
Built In Light	Yes	No
Built In Siren	Yes	Yes Catalog note 85 dB at 10 ft
Pathlight	Yes Catalog note When you walk under Nest Protect at night, it will light your way. You can choose different light levels or turn Pathlight off entirely in the app.	No
Steam Check	Yes Catalog note Has your alarm ever yelled at you for taking a shower? Nest Protect uses custom algorithms and a humidity sensor to look for steam, so you can enjoy a nice, quiet shower.	Yes Catalog note Dual-beam sensing tells smoke apart from steam and cooking fumes to cut false alarms
Tests Itself	Yes Catalog note Nest Protect checks its batteries and sensors over 400 times a day. And it uses Sound Check to quietly test its speaker and horn once a month	Yes Catalog note Push to test button, and the test can be triggered remotely from Home Assistant
Integrations
Alexa	No Catalog note Nest Protect has never been exposed to Alexa: Google keeps it inside the Google Home app	Yes Catalog note Via Matter
Apple Home	No	Yes Catalog note Via Matter
Google Home	Yes	Yes Catalog note Via Matter
Home Assistant	Yes	Yes Catalog note Via Matter
Matter	No	Yes Catalog note Matter 1.4 over Thread; Heiman holds CSA Matter certificates for its smoke sensors with temperature and humidity reporting
SmartThings	No	Yes Catalog note Via Matter
Power
Battery Life	Not applicable / unspecified	3.5 years
Battery Type	3x AA	CR123A
Wired	Yes	No
Sensors
Air Quality	No	No
Ambient Light	Yes Catalog note Detect when the room is dark so it can automatically turn on the Pathlight and Nightly Promise features.	No
Co	Yes	No
Humidity	Yes Catalog note Enables the Steam Check feature to reduce nuisance alarms caused by things like steam from your shower.	Yes Catalog note Built-in humidity sensor reported over Matter
Motion	Yes	No
Occupancy	Yes	No
Smoke	Yes	Yes Catalog note Dual-beam photoelectric sensor, UL 217 10th Edition certified
Temperature	Yes Catalog note Detect sudden rises in room temperature.	Yes Catalog note Built-in temperature sensor reported over Matter

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