Kidde 20SA10 Hardwired Smoke Detector 10-Year Backup
- Hardwired, 120V AC power
- 10-year battery backup, no low battery chirps
- Wired interconnect capable
- Photoelectric sensor, 85 dB alarm
- Red LED status light
- UL 217 10th Edition and FCC standards cited
- 10-year limited warranty
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A hardwired photoelectric smoke alarm with a sealed ten year backup battery and wired interconnect. It needs house wiring, and interconnect rules vary by model, so read the guide.
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ASIN: B0CX6BTBWLModel: 20SA10Category: Smoke Detectors & Fire Alarms
Overview
Wiring into the home power supply, this Kidde alarm adds a sealed backup battery, a photoelectric sensor and a loud alarm with a red status light. Mounting hardware and a user guide are listed.
Its strength is mains power with a backup that never needs swapping, and the option to link alarms so everyone hears one. The limitation is that it needs wired installation and the listing says linking requirements differ between models.
Who it's for
Houses and apartments with wired smoke alarm locations, and installers refitting several rooms, are the audience. Anyone without a wired location, or who wants carbon monoxide sensing too, should choose a different product.
Pros and cons
- Hardwired mains power
- Sealed long life backup battery
- Wired interconnect capable
- LED status light
- Needs wired installation
- Carbon monoxide not sensed
Performance notes
Mains power runs the alarm and the sealed battery covers outages, which also removes low battery chirps. The description says advanced sensing reduces false alarms from cooking steam while still catching real smoke.
Where it stands among smoke detectors & fire alarms
- #4 most-searched brand and model of the 33 smoke detectors & fire alarms lines we track (by search demand, not sales).
From the specs of the 45 smoke detectors & fire alarms we list; not a test result.
Specifications
| Brand | Kidde |
|---|---|
| Model | 20SA10 |
| Dimensions & fit | |
| Item Dimensions D X W X H | 1.88 x 5 x 5 inches |
| Item weight | 9.44 ounces |
| Capacity & performance | |
| Alarm volume | 85 dB |
| Upper Temperature Rating | 100 °F |
| Power & efficiency | |
| Power Source | Hardwired electric, 120V AC |
| Battery backup | 10-year built-in |
| Construction & materials | |
| Enclosure Material | Plastic |
| Color | White |
| Included components | |
| Unit Count | 1 Count |
| Warranty & support | |
| Manufacturer Warranty Description | 10-year limited warranty |
| Other details | |
| Sensor Type | Photoelectric |
| Alarm | Smoke detector |
| Builtin Media | Alarm, mounting hardware, user guide |
| Interconnect | Wired interconnect |
| Item Type Name | Smoke Alarm |
| Mfr Part Number | 21032863 |
| Operating Humidity | Up to 95% relative humidity (RH), non-condensing |
| Product Style | 9th Edition |
Frequently asked questions
Can the Kidde 20SA10 link to other Kidde alarms?
The listing says wired interconnect and the description adds that different models offer different interconnection options and requirements. Check the user guide before mixing models.
Do I ever replace the battery in the Kidde 20SA10?
The listing says no battery replacement or low battery chirps because of the built-in 10-year backup battery.
Does the Kidde 20SA10 sense carbon monoxide?
No. The alarm type is smoke detector with a photoelectric sensor.