Kidde i12010S Hardwired Smoke Detector
- 120V hardwired, sealed 10-year lithium backup
- Ionization smoke sensor
- Interconnects up to 24 Kidde alarms, plus 6 strobes or relays
- 85 dB alarm, red LED
- Test-hush button silences nuisance alarms
- UL 217, NFPA 72 and NFPA 101
- 10-year limited warranty, 1.75 x 5.5 x 5.5 inches
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A reliable hardwired smoke alarm for interconnected homes that want a sealed backup battery. One bullet mentions a CO sensor, but the rest of the listing describes a smoke-only unit.
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ASIN: B086S4NPWQModel: i12010SCategory: Smoke Detectors & Fire Alarms
Overview
A hallway outside the bedrooms is the classic spot for this Kidde hardwired smoke alarm, which runs on household power with a sealed lithium backup. Its ionization sensor reacts to flaming fires, and linked Kidde units sound together.
Large interconnect capacity lets one alarm trip every Kidde smoke, heat and CO unit in the house. Ionization sensing is quicker on flaming fires and more prone to cooking alarms, which the hush button helps manage.
Who it's for
Homes with existing alarm wiring that want sealed backup batteries and whole-house interconnect. Kitchens and baths may be better served by photoelectric models to cut nuisance alarms.
Pros and cons
- Sealed backup battery
- Large interconnect network
- Works with strobes and relays
- Chirps at end of life
- Ionization prone to cooking alarms
- CO sensor claim conflicts across listing
- Needs existing wiring
Performance notes
An ionization chamber detects the tiny particles from fast flaming fires sooner than slow smoldering ones. When the sealed battery nears end of life the unit chirps, signaling the whole alarm needs replacing.
Specifications
| Brand | Kidde |
|---|---|
| Model | i12010S |
| Dimensions & fit | |
| Item Dimensions D X W X H | 1.75"D x 5.5"W x 5.5"H |
| Item weight | 7.2 ounces |
| Capacity & performance | |
| Upper Temperature Rating | 100 F |
| Power & efficiency | |
| Power Source | 120V hardwired, sealed 10-year lithium backup |
| Construction & materials | |
| Color | White |
| Compatibility & installation | |
| Compatible Devices | Up to 24 Kidde devices |
| Included components | |
| Included components | Alarm, user manual |
| Unit Count | 1 Count |
| Warranty & support | |
| Manufacturer Warranty Description | 10 year limited warranty |
| Other details | |
| Sensor Type | Ionization |
| Alarm | 85 dB, red LED |
| Interconnect | Up to 24 Kidde smoke, heat or CO alarms; up to 6 strobes or relay modules |
| Operating Humidity | Up to 95% RH, non-condensing |
| Controls | Test-hush button |
| Specification met | UL 217, NFPA 72, NFPA 101, FHA |
| Item Type Name | Smoke Detector |
| Mfr Part Number | 21029760 |
| Product Style | i12010S |
Frequently asked questions
Does the Kidde i12010S detect carbon monoxide?
The title, specs and description describe a smoke detector with an ionization sensor. One bullet mentions an electrochemical CO sensor, so confirm before relying on it for CO.
How many alarms can the Kidde i12010S interconnect with?
Up to 24 Kidde smoke, heat or CO alarms, plus up to 6 strobe lights or relay modules.
Does the Kidde i12010S need battery changes?
No. It has a sealed 10-year lithium battery backup.
How do I silence a cooking false alarm on the Kidde i12010S?
Press the test-hush button.