Kidde 20SAR Hardwired Smoke Alarm with AA Backup
A hardwired smoke alarm with two replaceable AA backup batteries that connects to other Kidde alarms by wire.
Alarm spec sheet
| Type | Smoke |
|---|---|
| Power | Hardwired with 2 AA backup batteries |
| Interconnect | Wired |
Listed features
- AA backup batteries
- Hardwire interconnect
- Twist-and-click mount
Worth checking
- Needs household wiring
- Batteries need changing
Where to buy the 20SAR Hardwired Smoke Alarm with AA Backup
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- Check for recalls: Search the agency's recall list with the model number and date code from the label: CPSC recall search.
- Use and supervision: follow the maker's warnings on the product, and see CPSC's Safe Nursery guide. Check the label and the maker's instructions, and ask your pediatrician about your child.
Full specs
| Kidde 20SAR Hardwired Smoke Alarm with AA Backup | |
|---|---|
| Type | Smoke or CO alarm |
| Alarm | smoke |
| Power | Hardwired with 2 AA backup batteries |
| Interconnect | wired |
| Standards (maker) | Kidde DETECT alarms are designed to the latest UL standard |
| Maker's warnings | Change replaceable batteries every 6 months or when the low battery chirp sounds |
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20SAR Hardwired Smoke Alarm with AA Backup: questions answered
From Kidde's published specs, last checked 2026-11-11.
Where should the Kidde 20SAR Hardwired Smoke Alarm with AA Backup go?
Maker's standards wording: Kidde DETECT alarms are designed to the latest UL standard. Use and supervision: follow the maker's warnings on the product, and see the AAP's safety and prevention pages. Check the label and the maker's instructions, and ask your pediatrician about your child.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.
More smoke and CO alarms
Where these specs come from
Last checked 2026-11-11. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.