Kidde i9040 Fire Sentry Compact Smoke and Fire Alarm, Ionization Sensor, Battery-Operated

i9040 Fire Sentry Compact Smoke and Fire Alarm At a Glance: Battery-operated alarm offers continual operation, even during power outages Protects your family in case of a home fire Uses ionization technology to detect even invisible fire particles Includes 9-volt battery Three-year limited warranty

Each alarm provides a range of user-friendly features for easy operation and maintenance. View larger.

Use the test button to check the alarm's circuitry, horn, and battery function. View larger.

Compact Unit Provides Protection Against Home Fires
Measuring just four inches in diameter, the i9040 is smaller and more discrete than traditional smoke alarms, which makes it an ideal choice for smaller spaces or for blending in with your decor. It installs quickly without wires, and includes a test button that allows you to periodically check the circuitry, horn, and battery function. Also, a chirping sound makes it clear when it's time to replace the battery.

Ionization Sensor Technology
To ensure early detection of fires, the i9040 use ionization sensing technology Ionization sensing alarms may detect invisible fire particles (associated with fast flaming fires) sooner than photoelectric alarms. Photoelectric sensing alarms may detect visible fire particles (associated with slow smoldering fires) sooner than ionization alarms. Kidde strongly recommends that both ionization and photoelectric smoke alarms be installed to help insure maximum detection of the various types of fires that can occur within the home.

Compliancy and Warranty Information
The i9040 alarm is UL listed and is backed by a three-year limited warranty.

About Kidde: A UTC Fire and Security Brand
Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire and Security brand, with a history that's rich with innovations, from the patent of the Chubb Detector Lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004.

What's in the Box
Kidde i9040 Smoke and Fire Alarm, 9-volt battery, mounting hardware, and installation guide.

Keep your family safe by placing alarms and extinguishers in each area of the house, and by having a fire escape plan. Click here for a detailed image.

They have a mount which secures to the wall, the sensor unit can be taken down by rotating off the mount. They even come with batteries.


Good Smoke Alarm   August 14, 2007
William Arnold (Bellevue, Nebraska USA)
8 out of 9 found this review helpful

I've had five of these in my house for a couple of months now and haven't had a problem with any of them. I've had many, ahem, opportunities to test them thanks to my cooking skills (or lack thereof). They're very easy to install and, thanks to their small size, are less noticeable than the larger ones.


easy   August 25, 2006
orbital chaos
6 out of 9 found this review helpful

Compact, expertly packed, easy to install and best of all, a battery comes with it for immediate use!


Great little alarm at a fantastic price   November 25, 2008
D. Houston (Louisville, KY USA)
I wanted to install some extra smoke alarms in my law office and bought 3 of these. They are perfect. About 4 inches in diameter, they were easy to install and are not even noticed by visitors. Each tests fine and I sleep better at night with the extra protection. Great value at under $8 each. 5 stars. Will likely buy more


A video review of what the product looks like and how it works   February 23, 2008
Heath L. Buckmaster (Sacramento, CA USA)
60 out of 60 found this review helpful

Watch Video Here: http://www.amazon.com/review/R31KYF3PVLV2U8 Here's a quick video to show you what comes in the box, and how easy it is to use this compact smoke and fire alarm.