The shit. Dumb.

Back to the sheet Home & Living Smoke alarm · E7
Kidde 10-year sealed smoke alarm
E7 · Level 2 · A quiet chip Dependable doofus

Kidde 10-year sealed smoke alarm

Kidde 20SD10 smoke alarm with a sealed 10-year battery.

$32Buy on Amazon
Amazon US, October 2026. Prices change.

A sealed battery that lasts the life of the alarm, so no chirping at 3 a.m. for a new 9-volt. A chip decides what is smoke. It tells the room, and nobody else.

Off-grid
Runs on battery, crank or solar, so it survives a power cut.

Where to buy

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Survival checklist

What it survives, next to the smart one it replaces.
1
=SURVIVES(threat)Survives…
ThisKidde 10-year sealed smoke alarm
What it replacesSmart oneGoogle Nest Protect
2
Power cut
TRUE
FALSE
3
Wi-Fi goes down
TRUE
#DEPENDS
4
The company switches off its servers
TRUE
#DEPENDS
5
Someone tries to hack it
TRUE
FALSE
6
A firmware update goes wrong
TRUE
FALSE
7
Twenty years from now
#DEPENDS
#DEPENDS
8
=COUNTIF(TRUE)Total
5 of 65/6and one maybe
0 of 60/6and three maybes

The smart one is the Google Nest Protect.

Row 7

See it in the sheetIn the sheet
#N/A

Still nothing.

Even the simplest smoke alarm needs a chip to decide what is smoke.

You are here

Beeps at smoke, never at your phone.

Kidde 10-year sealed smoke alarm

$32
Off-grid
Kidde 10-year sealed smoke alarm$32
Buy on Amazon