Strongest overall pick
Aeotec SmokeShield (ZWA050)
Aeotec · HA: excellent · local: excellent
Adds local Z-Wave (incl. Long Range) reporting to well-built Ei 10-year alarms
View product notes →Compare category
Smoke alarms comparisons
A practical side-by-side for smoke alarms with the criteria that actually matter in local-first homes: local control, offline reliability, controller requirements, and ecosystem fit.
Best local-control posture
Aeotec SmokeShield (ZWA050)
Aeotec · works offline: yes
It transmits detection over Z-Wave to Z-Wave JS on the local mesh with no manufacturer cloud.
Why it stands out →Easiest starting point
frient Intelligent Smoke Alarm
frient · setup: easy
Home Assistant users who want smoke detection integrated into their automations
See buyer notes →| Criteria | Aeotec SmokeShield (ZWA050) | Ecolink FireFighter FF-ZWAVE5-ECO | First Alert ZCOMBO-G Z-Wave Smoke/CO Alarm | frient Intelligent Heat Alarm (HESZB-120) | frient Intelligent Smoke Alarm | Google Nest Protect Smoke + CO Alarm | Heiman Smart Carbon Monoxide Alarm | Heiman Smart Smoke Alarm | Kidde Smart Smoke + CO Alarm | X-Sense Smart Wi-Fi Smoke Alarm (SBS50 base) |
|---|---|---|---|---|---|---|---|---|---|---|
| Local control | excellent | excellent | excellent | excellent | excellent | poor | excellent | excellent | poor | poor |
| Cloud dependency | none | none | none | none | none | high | none | none | high | high |
| Home Assistant fit | excellent | excellent | good | excellent | good | fair | good | good | poor | poor |
| Works offline | yes | yes | yes | yes | yes | yes | yes | yes | yes | partly / no |
| Setup difficulty | intermediate | intermediate | moderate | intermediate | easy | easy | easy | easy | easy | intermediate |
| Needs extra hub / controller | yes | yes | yes | yes | yes | no | no | no | no | yes |
| Power / form factor | battery | battery | battery | battery | battery | battery | battery | battery | hardwired | battery |
| Protocols | z-wave | z-wave | z-wave | zigbee | zigbee | wifi | matter, thread | matter, thread | wifi | wifi, rf |
| Best for | Ei Electronics alarm owners wanting local Z-Wave fire alerts | Homes with existing interconnected smoke/CO alarms wanting local HA alerts | Home Assistant users who want local smart smoke and CO alerts for automations | Kitchens, garages and attics where smoke detectors false-trigger | Home Assistant users who want smoke detection integrated into their automations | existing Nest Protect owners who want to surface alerts in Home Assistant via the community integration | users who want a cross-platform smart CO alarm with local-only operation | users who want a cross-platform smart smoke alarm that works with any Matter controller | homeowners who want interconnected smart smoke alarms with phone notifications | Users already invested in X-Sense who accept cloud reliance for HA visibility |
| Where to buy | View at aeotec.com | amazon.com (affiliate) | amazon.com (affiliate) | View at frient.com | View at frient.com | amazon.com (affiliate) | View at heimantech.com | View at heimantech.com | View at kidde.com | View at x-sense.com |
budget price band
Aeotec SmokeShield (ZWA050)
Aeotec · local control: excellent · cloud: none
- Setup: intermediate
- Needs extra hub: yes
- Standout: A Z-Wave 800-series / Long Range retrofit shield that snaps onto Ei Electronics 10-year smoke and heat alarms to report fire events locally over Z-Wave.
budget price band
Ecolink FireFighter FF-ZWAVE5-ECO
Ecolink · local control: excellent · cloud: none
- Setup: intermediate
- Needs extra hub: yes
- Standout: A Z-Wave audio sensor that listens for your existing UL-listed smoke/CO alarms' T3/T4 patterns and relays them to Home Assistant - no detector swap needed.
mid price band
First Alert ZCOMBO-G Z-Wave Smoke/CO Alarm
First Alert · local control: excellent · cloud: none
- Setup: moderate
- Needs extra hub: yes
- Standout: One of the few smoke and CO alarms with Z-Wave support for fully local smart home integration without any cloud dependency.
mid price band
frient Intelligent Heat Alarm (HESZB-120)
frient · local control: excellent · cloud: none
- Setup: intermediate
- Needs extra hub: yes
- Standout: A Zigbee heat alarm that triggers on rapid temperature rise (not dust or steam), reporting locally to Home Assistant alongside a usable temperature sensor.
mid price band
frient Intelligent Smoke Alarm
frient · local control: excellent · cloud: none
- Setup: easy
- Needs extra hub: yes
- Standout: Certified smoke alarm with Zigbee connectivity that sounds locally and notifies Home Assistant.
premium price band
Google Nest Protect Smoke + CO Alarm
Google · local control: poor · cloud: high
- Setup: easy
- Needs extra hub: no / self-contained
- Standout: Wireless interconnect with voice alerts that tell you the type and location of danger across every Nest Protect in your home.
mid price band
Heiman Smart Carbon Monoxide Alarm
Heiman · local control: excellent · cloud: none
- Setup: easy
- Needs extra hub: no / self-contained
- Standout: Among the first Matter over Thread carbon monoxide alarms available, with cross-platform smart home support.
mid price band
Heiman Smart Smoke Alarm
Heiman · local control: excellent · cloud: none
- Setup: easy
- Needs extra hub: no / self-contained
- Standout: One of the first Matter over Thread smoke alarms, working across all major platforms with no cloud.
mid price band
Kidde Smart Smoke + CO Alarm
Kidde · local control: poor · cloud: high
- Setup: easy
- Needs extra hub: no / self-contained
- Standout: Wireless interconnect for multiple alarms with smartphone notifications and Alexa/Google voice status checks.
mid price band
X-Sense Smart Wi-Fi Smoke Alarm (SBS50 base)
X-Sense · local control: poor · cloud: high
- Setup: intermediate
- Needs extra hub: yes
- Standout: A polished interconnected 10-year sealed-battery smoke alarm line whose only Home Assistant path is an unofficial cloud-polling HACS integration.