I12040 - Smoke Detector - Ionization Sensor - Hardwired with 9V Battery

SKU: I12040A
Brand: Kidde
MPN: 21006378
Current Stock: 72
Usually Ships in 1 - 2 Business Days

Ships Today by 1:00PM

The Kidde I12040A smoke alarm uses an ionization sensor to detect invisible fire particles associated with flaming fires. This hard wired smoke detector runs on 120V power and has a 9V battery backup for outages. The interconnected feature allows it to be connected with up to 24 Kidde devices around the home or office.

  • Smoke detector with ionization sensor
  • One button design operates Hush and alarm test
  • Hard wired to 120V with 9V battery backup included
  • Interconnectable with up to 24 smoke, carbon monoxide, and heat alarms
  • Loud 85 dB at 10ft

Ratings & Reviews

23 reviews

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2/25/2022 2:41:00 pm

Fast & easy ordering Thanks

by Carolyn Boen -

Fast & easy ordering Thanks

9/3/2019 12:00:00 am


by Thomas K. -


8/18/2019 12:00:00 am

Perfect Replacement

by Mark T. -

These were a perfect replacement for the ones installed when my house was built. Saved a lot of time on the install.