Kidde 20SAR-W Smart Smoke Alarm
A hardwired smart smoke alarm that sends alerts to the Kidde app over 2.4 GHz Wi-Fi and has two AA backup batteries.
Alarm spec sheet
| Type | Smoke |
|---|---|
| Power | Hardwired (120V AC) with 2 AA backup batteries |
| Interconnect | Wired |
| App | Yes |
Listed features
- Mobile alerts
- Interconnects with hardwired alarms
- AA backup batteries
Worth checking
- Needs household wiring
- Needs 2.4 GHz Wi-Fi
Where to buy the 20SAR-W Smart Smoke Alarm
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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-W Smart Smoke Alarm | |
|---|---|
| Type | Smoke or CO alarm |
| Alarm | smoke |
| Power | Hardwired (120V AC) with 2 AA backup batteries |
| Interconnect | wired |
| Standards (maker) | ETL certification |
| Maker's warnings | AC power is required for full operation and Wi-Fi; batteries are backup only; do not use lithium batteries |
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20SAR-W Smart Smoke Alarm: questions answered
From Kidde's published specs, last checked 2026-11-11.
Where should the Kidde 20SAR-W Smart Smoke Alarm go?
Maker's standards wording: ETL certification. 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.
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Where these specs come from
Last checked 2026-11-11. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.