Kidde Worry Free 10-Year Hallway Sealed Lithium Battery Operated Smoke Alarm with LED Escape Light-21009665 - The Home Depot
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Model # 21009665

Internet # 203525028

Store SKU # 144861

Worry Free 10-Year Hallway Sealed Lithium Battery Operated Smoke Alarm with LED Escape Light

Kidde Worry Free 10-Year Hallway Sealed Lithium Battery Operated Smoke Alarm with LED Escape Light

This item has been discontinued.
The Home Depot no longer carries this specific product.

$36.97 / each


Model # 21009665

Internet # 203525028

Store SKU # 144861

Kidde Smoke Alarm is powered by sealed, long-life lithium batteries for ten years (the life of the alarm), meaning the alarm is always on. This Smoke Alarm is ideal for the hallway. This ten year smoke has super bright LEDs to provide lighted escape path. With a sealed, long-life Lithium Battery Smoke Alarm installed in your hallway, you can enjoy peace of mind knowing your hallway Smoke Alarm is always on; 24 hours per day, seven days a week for a decade.

  • Kidde 10 year bedroom smoke alarm is maintenance-free; never replace a battery during the alarm's operating life, in addition to the benefit of maintenance free, batteries are sealed, no need to worry about them being removed
  • Goodbye late night low battery chirps, an end-of-life signal tells you when it is time to replace the alarm unit, end of life signal chirps every 30-45 seconds when alarm needs replaced
  • Money savings, no batteries to buy and replace every six months, save up to $40.00 over the life of the alarm
  • Alarm is equipped with test - reset button, tests the circuitry and horn and resets memory after alarm has sounded
  • Alarm is UL listed and is equipped with a piezoelectric horn that is rated at 85 decibels at 10 ft.
  • Alarm is UL listed and is equipped with a piezoelectric horn that is rated at 85 decibels at 10 ft.

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Alarm Sensor Type 
Alarm Type 
Alarm/Detector Features 
10-Year Battery,Escape Light,Hush Feature,Tamper Resistant 
Commercial / Residential 
Commercial / Residential 
Connector/Contact Type 
Power Source 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed 


Rated 4.1 out of 5 by 41 reviewers.
Rated 4.0 out of 5.0 by Peace of mind for 10 years. Good to have a Smoke alarm that does not bother you about changing the battery. Those battery chirps can be really annoying. The smoke alarm works well and the LED ESCAPE LIGHT is a great safety feature to have. My biggest grudge with the smoke alarm is the mounting hardware which was a bit challenging to mount on a popcorn ceiling.Intentions were right but the design is faulty. Once installed then it is set for 10 years (as stated on the box) We will have to wait to validate :-) August 10, 2014
Rated 5.0 out of 5.0 by Easy install and peace of mind Got this smoke alarm to replace a very old one with a dead battery. The main feature that drew me to this unit was the 10-year battery. Most 9v batteries in other alarms I've used only last about a year and always seem to start chirping in the middle of the night! Out of the box I was impressed with the ease of Installation for this alarm. There is a plastic circle mounting bracket with a self-tapping plastic toggle. You will also want to use the supplied screws and anchors to keep the bracket from turning. Once the bracket is installed you twist the alarm onto the bracket and its activated. If you don't use some extra screws then the bracket will turn making it difficult to get the alarm to lock in properly. This install took me a couple minutes and seems much more secure on the wall than the old metal bracket my old alarm used. The test button on this model is also about 2" across. I was easily able to press the test button from the ground with a broom handle so testing this unit is very quick and easy. The old alarm had a small button and took a ladder to reach so it didn't get tested as often as it should have. Finally, this unit has a small LED light to provide some illumination which seems very handy to me in the case of an emergency especially if there was a power outage. Overall, I'm happy with this alarm since it was easy to install, has a long life battery, and comes from Kidde who has a good reputation in the fire safety industry. March 27, 2014
Rated 2.0 out of 5.0 by Customer returned I bought 2 of these units 11/2014 specifically for the 10 year battery and the light. I decided to install them last night. Neither package had been opened prior to my opening them. One of the units had been bought and returned by a prior customer. They had written the date of 12/24/2013 of installation on it and the same date as having been replaced. When I opened the second unit I found it had NO light and no wall attachment plate. Obviously, someone switched them. This makes me wonder about the manufacture's/distribution of these units in general. I will replace these units and hope HD believes my problem with both units. I've had these units before and highly recommend them. February 23, 2015
Rated 4.0 out of 5.0 by NOT ten year battery! Just bought. Searched for battery expiration date on package like I have seen on any other kind of batteries, including auto. No date visible. Manufacture date (only AFTER opening package) was seven months ago. Batteries can not be replaced. When re-stocked, new are certainly going to be placed in front of old, and not rotated. Emergency safety light seems somewhat dim. I hope unit works if there ever is a fire. Photoelectric units (which this one is) are supposed to be better than ionization type. I have seen a spray can for sale somewhere that produces a mist to check smoke alarms. February 18, 2015
Rated 1.0 out of 5.0 by 1 of 3 is junk Purchased a package of 3 Dec 2014 and placed them in laundry room, kitchen and hallway. Came home Mar 2, 2015 to one in hallway sounding alarm. Turned it off and it re-activated a few minutes later. There was absolutely no smoke in the house. I switched the alarms from laundry room and hallway and the former hallway alarm sounded again. I switched it off permanently and threw it out. If the remaining two alarms fail in this manner I will also toss them out. Am replacing the bad alarm with another brand. March 2, 2015
Rated 5.0 out of 5.0 by Peace of mind... No home should be without this product. Clean, compact and set it and forget it. Honestly don't know that the battery will last 10 years - I guess I can check back and update this review then - HA! One thing I want to mention is the easy open clam shell packaging. I typically DESPISE this type of packaging un-eco friendly and there are more injuries because of it - HOWEVER this was truly an easy open package with perforations for easy removal of the smoke alarm. July 31, 2014
Rated 1.0 out of 5.0 by Installed two on 04/11/13; Removed them on 04/15/13 Early on the 15th both alarms starting chirping. i took them down and based on the information on the back o f them "fault mode" is active. Cannot stop them. Will return same to Home Depot. April 15, 2013
Rated 2.0 out of 5.0 by Not sure I would recommend these Purchased 2 of these in October 2013 to replace old smoke detectors. In December, 1 failed (constant alarm, would not hush, when set next to another alarm not sounding it continued to go off). We are returning it for a refund. December 7, 2013
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