Kidde P12040 Hardwired Interconnect Photoelectric Smoke Alarm with Hush™ 120V AC / DC

The Kidde P12040 is a 120VAC powered photoelectric smoke alarm with 9V battery back up. This advanced smoke alarm has the ability to function as a stand-alone unit or in an interconnected system. The Kidde P12040 includes a test button, quick-connect power harness and offers a 10-year limited warranty. This alarm uses photoelectric sensing technology. Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner that photoelectric alarms.

Kidde strongly recommends that both ionization and photoelectric smoke alarms be installed to help insure maximum detection of the various types of fire that can occur within the home. The Kidde model P12040 is a 120VAC powered alarm that includes a 9V battery backup to provide continuous protection during a power failure and included a quick connect power harness to make installation simple.


Photoelectric Sensor – Advanced photoelectric sensor may detect visible particles (associated with smoldering fires) sooner than ionization alarms.
Battery Backup (9V Battery Included) – Provides continuous protection even during power outages.
Test Button – Tests unit’s electronic circuitry, horn and battery function.
Quick Connect Power Harness – Makes installation fast and easy.
Dust Cover – Protects sensor during construction.
Battery Pull Tab – Eliminates battery installation time and keeps battery fresh.
Red LED – Indicates that the smoke alarm is operating properly, HushTM, and alarm condition.
Green LED – Indicates the presence of AC power.


Model: P12040
UPC: 0-47871-40399-8
Power Source: 120VAC
Sensor: Photoelectric
Audio Alarm: 85dB at 10ft
Temperature Range: 40˚F (4.4˚C) to 100˚F (37.8˚C)
Humidity Range: 5%-95% relative humidity (RH)
Size: 5.6” in diameter x 1.55” depth
Weight: 1lb
Interconnects: Up to 24 Kidde devices
LED: Green, receiving ac power, Red , alarm mode
Warranty: 10 year limited
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