
Option 1 · Heiman
Heiman Interconnected CO Alarm C1-R
Last updated October 2026
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A summary of selected recorded differences between these smoke & co detectors. Check the full specification table below for details and conditions.
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 · Heiman
Last updated October 2026
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Option 2 · X-Sense
Last updated October 2026
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These counts describe the available data, not a quality score. More features do not automatically make a better device.
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Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.
Showing 37 of 37 rows. “Not recorded” does not mean “No”.
Local 85 dB alarm on every linked unit, plus app push alerts when paired to the Heiman gateway
The alarm itself has no Wi-Fi: the optional WS3GW-R gateway joins a 2.4 GHz network and relays its alerts to the Heiman app
IEEE 802.11b/g/n
915 MHz Sub-1G radio, up to 800 ft in open areas per Heiman; links with other Heiman RF alarms such as the S1-R so one alarm sets them all off
The large LCD indicates how much carbon monoxide the alarm is detecting, ranging from 30 to 999 ppm.
Automations run in the Heiman app or a linked platform once the gateway is added
85 dB at 10 ft
Continuous sensor, RF link and battery self-diagnostics, plus a test and silence button
Alexa has no carbon monoxide alarm device type outside Matter, and the C1-R is not a Matter device
X-Sense confirms its smoke and CO alarms do not work with Alexa: only the AS05 and AS08 security kits are Alexa compatible, and Alexa's API has no smoke or CO alarm type anyway
Through the Heiman WS3GW-R gateway, which Heiman says works with Home Assistant, IFTTT, Google Home and SmartThings
Through the Heiman WS3GW-R gateway, which Heiman says works with Home Assistant, IFTTT, Google Home and SmartThings
Community X-Sense integration for Home Assistant (HACS), which lists this model and reads it from the X-Sense cloud account
Through the Heiman WS3GW-R gateway, which Heiman says works with Home Assistant, IFTTT, Google Home and SmartThings
Japan-made FIGARO TGS5141 electrochemical sensor, UL 2034 5th Edition
| Specification | Heiman Interconnected CO Alarm C1-R | X-Sense Wi-Fi Carbon Monoxide Alarm |
|---|---|---|
| Alerts | ||
| No | No | |
YesCatalog noteLocal 85 dB alarm on every linked unit, plus app push alerts when paired to the Heiman gateway | Yes | |
| No | No | |
| Yes | Yes | |
| No | No | |
| Connectivity | ||
Heiman Gateway requiredCatalog noteThe alarm itself has no Wi-Fi: the optional WS3GW-R gateway joins a 2.4 GHz network and relays its alerts to the Heiman app | YesCatalog noteIEEE 802.11b/g/n | |
| No | No | |
| No | No | |
RF wireless interconnectCatalog note915 MHz Sub-1G radio, up to 800 ft in open areas per Heiman; links with other Heiman RF alarms such as the S1-R so one alarm sets them all off | No | |
| No | No | |
| No | No | |
| No | No | |
| Display | ||
| No | Yes | |
| Not applicable / unspecified | LCDCatalog noteThe large LCD indicates how much carbon monoxide the alarm is detecting, ranging from 30 to 999 ppm. | |
| Features | ||
Heiman Gateway requiredCatalog noteAutomations run in the Heiman app or a linked platform once the gateway is added | No | |
| No | Yes | |
YesCatalog note85 dB at 10 ft | Yes | |
| No | No | |
| No | No | |
YesCatalog noteContinuous sensor, RF link and battery self-diagnostics, plus a test and silence button | No | |
| Integrations | ||
NoCatalog noteAlexa has no carbon monoxide alarm device type outside Matter, and the C1-R is not a Matter device | NoCatalog noteX-Sense confirms its smoke and CO alarms do not work with Alexa: only the AS05 and AS08 security kits are Alexa compatible, and Alexa's API has no smoke or CO alarm type anyway | |
| No | No | |
Heiman Gateway requiredCatalog noteThrough the Heiman WS3GW-R gateway, which Heiman says works with Home Assistant, IFTTT, Google Home and SmartThings | No | |
Heiman Gateway requiredCatalog noteThrough the Heiman WS3GW-R gateway, which Heiman says works with Home Assistant, IFTTT, Google Home and SmartThings | YesCatalog noteCommunity X-Sense integration for Home Assistant (HACS), which lists this model and reads it from the X-Sense cloud account | |
| No | No | |
Heiman Gateway requiredCatalog noteThrough the Heiman WS3GW-R gateway, which Heiman says works with Home Assistant, IFTTT, Google Home and SmartThings | No | |
| Power | ||
| 10 years | 1 year | |
| CR123A | CR123A | |
| No | No | |
| Sensors | ||
| No | No | |
| No | No | |
YesCatalog noteJapan-made FIGARO TGS5141 electrochemical sensor, UL 2034 5th Edition | Yes | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
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