# First Alert Onelink Safe & Sound vs Kidde Smart Smoke + CO Alarm with Indoor Air Quality Monitor (P4010ACSCOAQ-WF): specs and price compared

A sourced, side-by-side comparison of the First Alert Onelink Safe & Sound (First Alert) and Kidde Smart Smoke + CO Alarm with Indoor Air Quality Monitor (P4010ACSCOAQ-WF) (Kidde) among smart smoke detectors.

## Side by side

| Spec | First Alert Onelink Safe & Sound | Kidde Smart Smoke + CO Alarm with Indoor Air Quality Monitor (P4010ACSCOAQ-WF) |
| --- | --- | --- |
| US price | not published | not published |
| Brand | First Alert | Kidde |
| Released | 2017 | — |
| Sensor type | photoelectric | photoelectric |
| Detects co | Yes | Yes |
| Power | hardwired | hardwired |
| Interconnect | wireless | wired |
| App alerts | Yes | Yes |
| Voice location alerts | Yes | — |
| Sensor life yr | 10 | 10 |
| Self test | Yes | Yes |

## Key differences

- Interconnect: First Alert Onelink Safe & Sound wireless vs Kidde Smart Smoke + CO Alarm with Indoor Air Quality Monitor (P4010ACSCOAQ-WF) wired

## Sources

- First Alert Onelink Safe & Sound: https://www.firstalertstore.com/store/products/onelink-smoke-and-carbon-monoxide-alarm-with-amazon-alexa-1039102.htm (firstalertstore.com, verified 2026-08-16)
- Kidde Smart Smoke + CO Alarm with Indoor Air Quality Monitor (P4010ACSCOAQ-WF): https://www.kidde.com/products/smart/smoke-carbon-monoxide-alarm-with-indoor-air-quality-monitor (kidde.com, verified 2026-08-16)

Canonical: https://frontdeskreview.com/gear/smart-smoke-detectors/first-alert-onelink-safe-and-sound-vs-kidde-smart-smoke-co-aq/
Cite: Per The Front Desk Review, First Alert Onelink Safe & Sound (not published) vs Kidde Smart Smoke + CO Alarm with Indoor Air Quality Monitor (P4010ACSCOAQ-WF) (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/smart-smoke-detectors/first-alert-onelink-safe-and-sound-vs-kidde-smart-smoke-co-aq/
License: CC BY 4.0.