Product overview
Kidde i12010SCO: What to Know
Per Kidde's own product page, the i12010SCO is designed to wire directly into your home's electrical system (AC wire-in) while including a sealed 3-volt lithium battery backup rated for 10 years, meaning it keeps working through a power outage without needing a separate battery swap for the life of that backup cell. Kidde describes this as "Intelligent sensor technology" combining an ionization smoke sensor (which the company states is more responsive to smaller, less visible particles from flaming fires) with an electrochemical sensor specifically for carbon monoxide.
A distinguishing feature per Kidde's materials: the alarm gives voice warnings that announce "Fire!" or "Warning, Carbon Monoxide" by name, rather than relying solely on a generic tone pattern — useful for immediately understanding which hazard triggered the alarm without needing to interpret different beep patterns. It includes a test/hush button, and Kidde states its sensor technology is tuned to reduce nuisance alarms from cooking or steam.
Being hardwired, this model requires an existing electrical connection compatible with Kidde's wiring specifications, which is a different installation path than the fully battery-operated units in this guide (First Alert SMI100, X-Sense XS01-WR/WX) — plan for an electrician or existing smoke-alarm wiring if you don't already have compatible wiring in place.
Key Listed Features
Combined ionization smoke sensor and electrochemical CO sensor
Hardwired (AC wire-in) with a sealed 10-year lithium battery backup
Voice alerts announcing "Fire
Test/hush button with nuisance-alarm-reducing sensor tuning
