Product Library / Security Systems & Alarms

Kidde Smoke + Carbon Monoxide Alarm with smart features (P4010ACSCO-WF)

Compiled by SmartHomeWorkflow Research · Kidde · Security Systems & Alarms

Compatibility

Protocols: WIFI^[1]

What it can do^[11]

• Alexa: Status queries only, in Kidde's own words: "Compatible with Google Assistant and Amazon Alexa: Use voice commands to check alarm status and connection." Kidde names no path by which an alarm event reaches Alexa, so an Alexa routine cannot react to smoke or CO from this device — you can ask it whether the alarm is well, not be told by it that it is not.
• Google Home: Status queries only, in Kidde's own words: "Compatible with Google Assistant and Amazon Alexa: Use voice commands to check alarm status and connection." Kidde names no path by which an alarm event reaches Google Home, so a Google automation cannot react to smoke or CO from this device.

Listed capabilities are what we could establish from vendor documentation. An ability missing here is unestablished — not necessarily absent.

Subscription reality

✓ Works without a subscription: Yes.

Vendor account required: Not established — we have not sourced this yet.

Nothing on this alarm is paywalled and no subscription is offered for it. One nearby fact recorded so it is not mistaken for this product: Kidde's smart-home page advertises an "Advanced Home Health subscription" for mould-risk tracking and personalised recommendations — that belongs to the indoor-air-quality models (the P4010ACSCOAQ-WF and the plug-in CO/IAQ monitor), which this model is not. No paid tier touches the smoke or CO function of this alarm.

Maintenance reality^[1][2]

• Batteries: 3 V sealed lithium backup battery, not user-replaceable — it lasts the life of the alarm — expect roughly 120 months per set
• Works without the internet: Not established — we have not sourced this yet. It does not mean the product fails without the internet.
• Hard 10-year end of life, and it is the alarm rather than the battery that expires: after 10 years of operation the unit chirps and says "Replace alarm, press button to temporarily silence", and the user guide instructs the owner to write a "Replace by" date 10 years out at install. Photoelectric smoke sensor plus electrochemical CO sensor; 85 dB at 10 ft. Powered by 120 VAC 60 Hz (53 mA max) with the sealed lithium cell as backup. Interconnects with up to 24 Kidde devices, but only over hardwired AC interconnect and, in Kidde's words, "not designed to be interconnected with other manufacturer's products." Cloud dependence is recorded false because detection and sounding are wholly local — but note the inverse, from the user guide: "Wi-Fi features do not function without AC power", so in a mains outage the alarm still protects the house and the app goes quiet.

Security updates^[13]

Kidde publishes no security-update support date for this model. That is a gap in what the manufacturer has published, not evidence either way — some makers declare a support period and some say nothing at all.

Kidde publishes no security-support period for its connected alarms. Its own firmware article for smart products says only, verbatim, that "When a firmware update is available for your device, we will prompt you to install it", and adds that keeping the device updated matters for detection and protection - how updates arrive, never for how long they will come. The product page for this alarm states a 10-year limited warranty on the alarm, which is a hardware warranty and not a patching commitment, and says nothing about security updates. No regulatory declaration was found: these Wi-Fi alarms are sold through Kidde's US and Canada storefronts, so the UK PSTI regime that produces per-model support-period declarations elsewhere in this catalogue does not attach to them, and Kidde publishes no equivalent voluntary statement.

The catch

Kidde is unusually blunt about the limits of its own smart features, and the warning is worth reading before the marketing: "Mobile alert services are ancillary to the product and for informational purposes only. They are not intended or suitable for life safety or critical purposes nor do these services take the place of third-party life safety monitoring services." Three practical consequences. The voice integration is a status check, not an alarm relay — nothing Kidde publishes says a fire or CO event reaches Alexa or Google. Wi-Fi features stop entirely without mains power, so in an outage the alarm still sounds in the house but your phone hears nothing. And the interconnect that makes every alarm sound together is hardwired and Kidde-only, so it will not bridge to another brand's alarms.

Who it's for

Households replacing hardwired Kidde alarms who want phone notification and a remote hush without adding a hub or a subscription, and who accept that the smart layer is a convenience rather than a monitoring service. Not a fit for anyone wanting alarm events to drive smart-home automations, or expecting the alarm in Apple Home, SmartThings or Home Assistant.

Sources & method

Numbered sources below back the facts marked with the matching number above. This is a research profile: compiled from manufacturer documentation, certification registries, and published testing — we state facts, not verdicts, and we have not physically tested this unit. How we work →

1. [1] Kidde product data sheet PDS-KL-P4010ACSCO-WF-0522 (first-party, brand.kidde.com) — "Smoke + Carbon Monoxide Alarm with smart features, 2-in-1 Wi-Fi Alarm with App, Model P4010ACSCO-WF"; Technical Specifications table: Power Source "120VAC 60Hz, 53mA max / 3V sealed lithium battery backup", Sensor(s) "Smoke: Photoelectric / CO: Electrochemical", Audio Alarm "85dB at 10ft", Wi-Fi "802.11b/g/n (2.4GHz) Wi-Fi (Wi-Fi features only work with AC power connected)"; Interconnect "Up to 24 Kidde devices"; End of Unit Life "After 10 years of operation, chirps and voice 'Replace alarm, press button to temporarily silence'"; UPC 047871310425. hubRequired is false — the sheet states "No additional hub is needed to set up your Kidde smart devices." — vendor-document research, verified 2026-07-31
   Backs: Product identity, Protocols, Maintenance, Required hub or bridge
2. [2] Kidde user guide P4010ACSCO-WF_UG (first-party, brand.kidde.com) — "The National Fire Protection Association (NFPA) and the manufacturer recommend replacing this alarm ten years from" the install date, with the guide instructing the owner to write the "Replace by" date on the unit at install; "Wi-Fi COMPATIBILITY: This model requires a home Wi-Fi router… Requires 802.11b/g/n (2.4GHz) Wi-Fi" and "NOTE: Wi-Fi features do not function without AC power." Section 11.4: "Your WiFi alarm is compatible with Amazon Alexa and Google Assistant." — vendor-document research, verified 2026-07-31
   Backs: Maintenance, Service status
3. [3] Kidde data sheet PDS-KL-P4010ACSCO-WF-0522, verbatim: "Compatible with Google Assistant and Amazon Alexa: Use voice commands to check alarm status and connection." kidde.com/smart-home states the same capability as "Compatible with Google Home and Amazon Alexa. Use voice commands to check alarm status and connection." The user guide's section 11.4 confirms compatibility but adds no further function. Both cells are `partial` rather than `full` because every Kidde surface describes a status query and none claims that alarm events are delivered to either assistant — for a smoke and CO alarm that distinction is the whole point, so it is recorded rather than smoothed over. — vendor-page and vendor-document research, verified 2026-08-17
   Backs: Amazon Alexa compatibility, Google Home compatibility
4. [4] Counterparty sources: csa-iot.org certified-products search for "kidde" returns "No Entries Found" — no Matter certification of any kind, closing the Matter route into Apple Home (control: the same search returns 12 entries for eufy, so the query works); partners.smartthings.com/partners/kidde returns 404, i.e. Samsung publishes no Kidde partner entry (control: the eufy path returns 200); home-assistant.io's integrations index carries no Kidde integration (control: the same index carries eufy and eufylife_ble). — counterparty-source research (control-tested), verified 2026-07-31
   Backs: Home Assistant compatibility, Apple Home compatibility, SmartThings compatibility
5. [5] Queried the regulator's own API (saferproducts.gov RestWebServices/Recall) on ProductName for Kidde: 11 results. The nearest in scope is "Kidde Recalls TruSense Smoke and Combination Smoke/Carbon Monoxide Alarms Due to Risk of Failure to Alert Consumers to a Fire" (2021-05-06), whose description names the affected units as "Model Series 2040, 2050, 2060 and 2070" — specifically 2040-DSR, 2050-DS10, 2060-ASR, 2070-VDSCR, 2070-VASCR, 2070-VDSR and 2070-VASR, and only those bearing the TruSense logo or "AMBER=FAULT". P4010ACSCO-WF appears in no recall in the set. Recorded because a smoke-alarm record should state this outright, and because the model-number families are close enough that a headline-level reading would have been wrong in either direction. — regulator-source research (control-tested), verified 2026-07-31
6. [6] Kidde data sheet PDS-KL-P4010ACSCO-WF-0522, verbatim: "WARNING: Mobile alert services are ancillary to the product and for informational purposes only. They are not intended or suitable for life safety or critical purposes nor do these services take the place of third-party life safety monitoring services. This product's smartphone and tablet notifications require a stable Wi-Fi connection, and are only as reliable as your home Wi-Fi network." The sheet also footnotes that the HomeSafe features are "only available on devices with the Kidde HomeSafe feature, not other interconnected alarms, when you are connected to the same Wi-Fi network as the alarm" — recorded verbatim rather than paraphrased, because the scope of that condition is genuinely ambiguous on the page and we will not resolve it by guessing. — vendor-document research, verified 2026-07-31
7. [7] kidde.com/products/smart/smoke-and-carbon-monoxide-alarm-with-smart-features — listed as a current product on Kidde's smart-alarm line-up with a live data sheet and user guide. The data sheet's revision code (PDS-KL-P4010ACSCO-WF-0522) and its "©2022 Carrier" line show the model — migrated hand stamp, verified 2026-07-31
   Backs: Market availability
8. [8] Kidde product data sheet PDS_KL_P4010ACSCO-WF, corroborated by the P4010ACSCO-WF user guide cover ('120V Hardwire') — vendor-documentation research, verified 2026-08-17
   Backs: Power source
9. [9] Kidde P4010ACSCO-WF user guide — vendor-documentation research, verified 2026-08-17
   Backs: Wi-Fi bands it can use
10. [10] brand.kidde.com P4010ACSCO-WF user guide PDF (partial text extraction) plus the cited data sheet, product page and CSA search, re-read 2026-08-18 — vendor-page research, verified 2026-08-18
11. [11] Kidde's own product data sheet for model P4010ACSCO-WF (PDS-KL-P4010ACSCO-WF-0522, © 2022 Carrier), read in full 2026-08-20. Detection: "Alerts you to both smoke & carbon monoxide in just one device", with sensors listed as "Smoke: Photoelectric / CO: Electrochemical" and CO alarm response times "70ppm: 60-240min, 150ppm: 10-50min, 400ppm: 4-15min". Remote reporting: "Remote alarm notifications: Real-time mobile alerts through the Kidde app" and "Use the Kidde app to receive notifications if hazards are detected, know when the device needs to be replaced and test alarms." Platforms: "Compatible with Google Assistant and Amazon Alexa: Use voice commands to check alarm status and connection." Interconnect: "Whole-home alarm activation: Interconnected alarms activate together — when one alarm sounds, they all sound, and an alert is sent to your phone", footnoted "Alarms only connect with other Kidde alarms that have hardwired AC interconnect capability." Wi-Fi caveat: "802.11b/g/n (2.4GHz) Wi-Fi (Wi-Fi features only work with AC power connected)." — vendor + ecosystem-documentation research (BQ-187 capabilities population), verified 2026-08-20
    Backs: Capabilities
12. [12] No source was read for this entry. It records an edit so the edit is not silent, per the freshness guard's own instruction. — provenance URL backfill (BQ-212 tranche 8) — labelling pass, no re-verification, verified 2026-08-20
13. [13] Kidde first-party surfaces read 2026-08-22. Support article "How do I update the firmware for my device?" (kidde.com/support/connected-home/update-device-firmware), verbatim: "When a firmware update is available for your device, we will prompt you to install it" and "It is important to keep your device updated with the latest firmware to ensure proper detection and protection" - no period, no end date, no duration. Product page for the Smoke + Carbon Monoxide Alarm with smart features (kidde.com/products/smart/smoke-and-carbon-monoxide-alarm-with-smart-features), verbatim: "10-year limited warranty on alarm. Not a battery performance claim." - a hardware warranty, with no security-update statement anywhere on the page. The storefront serves US and CA regions only and no UK PSTI statement or equivalent declaration for these models was located. — first-party security-support sweep (BQ-192, method note 69 rungs a-c walked, outcome recorded whichever way it fell), verified 2026-08-22
    Backs: Security-update support period
14. [14] kidde.com/support/ (live, read 2026-08-30) and kidde.com/support/connected-home/ (HTTP 404, the record's own recheck target) — vendor-page research, verified 2026-08-30
    Backs: Research status, Service status
15. [15] kidde.com — Smart Products surfaces, read 2026-08-30 — vendor-page research, verified 2026-08-30
    Backs: Market availability
16. [16] Record-keeping entry: the migrated research stamp was retired from this record on 2026-08-30 — internal, verified 2026-08-30
17. [17] Record-keeping entry: this record's `none` cells were classified under the five-way absence sort, 2026-08-30 — internal, verified 2026-08-30

Compatibility and lifecycle information reflects the last-verified date above and can change without notice (firmware updates, cloud-service changes, discontinuations). It is provided as-is, for information — verify with the manufacturer before purchasing. Spot an error? Tell us and we'll fix it. Full terms: Terms of Service.

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