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Brand
Kidde
Power Source
Battery Powered
Color
White
Item Dimensions LxWxH
2 x 6 x 6 inches
Item Weight
0.5 Pounds
Upper Temperature Rating
38 Degrees Celsius
Sensor Type
Photoelectric

  • Kidde 21006371 p12040 Hardwire with Battery Backup Photoelectric Smoke Alarm, White

  • Hardwired 120-Volt Inter-Connectable Smoke Alarm with Battery Backup

    The Kidde P12040 Hardwire inter connectable Photoelectric Smoke Alarm with Battery Backup can act as a stand-alone unit or can be integrated into an existing electrical system. This unit sounds an early warning to alert you and your family of the presence of visible fire particles detected by the alarm's photoelectric sensor. Powered by 120-Volt AC, this alarm protects you, your home and the people you hold dear even during power outages, thanks to a 9-Volt battery backup. A power harness facilitates an easy installation and a simple push of a button activates this alarm's test and hush features.


    All interconnected alarms will sound when one alarm goes off


    Smoke detector requires hardwire installation


    Power harness makes installation fast and easy

    Description

    Product Description

    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. Part Number (Ordering Number): 21006371 Architectural and Engineering Specifications - The smoke alarm shall be Kidde model P12040 or approved equal. It shall be powered by a 120VAC, 60Hz, 80mA source along with a 9V battery back up. The unit shall incorporate a photoelectric sensor with nominal sensitivity of 1.20%/ft to 3.36%/ft. The temperature operation range shall be between 40˚F and 100˚F (4˚C and 38˚C) and the humidity operation range shall be 5% - 95% relative humidity. The smoke alarm can be installed on any standard single gang electrical box, up to a 4” octagon junction box. The electrical connection (to the alarm) shall be made with a plug-in connector. A maximum of 24 Kidde devices can be interconnected in a multiple station arrangement. The interconnect system must not exceed the NFPA (National Fire Protection Association) limit of 18 initiating devices, of which 12 can be smoke alarms. With 18 initiation devices (smoke, heat, CO, etc.), interconnected, it is still possible to interconnect 6 strobe lights and or relay modules. The unit shall provide optional tamper resistance that deters removal of the unit from the wall or ceiling. The alarm shall include a test button that will electronically simulate the presence of smoke and cause the unit to go into alarm. This sequence tests the unit’s electronics, battery and horn to ensure proper operation. The unit shall include a piezoelectric horn that is rated at 85dB at 10 feet. The unit shall also include a low battery warning utilizing a brief alarm chirp every 30-40 seconds for a minimum of seven (7) days. The unit shall incorporate one red LED to indicate the alarm’s current status and mode of operation. The red LED will indicate one of two conditions: Standby Condition: The red LED will flash every 30-40 seconds to indicate that the smoke alarm is operating properly. Alarm Condition: When the alarm senses products of combustion and goes into alarm, the red LED will flash rapidly (one flash per second). The rapid flashing LED and pulsating alarm will continue until the air is cleared. The unit shall incorporate one green LED to indicate the presence of AC power. The unit shall at a minimum meet the requirements of UL217, NFPA72, The State of California Fire Marshall, NFPA 101 (One and two family dwellings) Federal Housing Authority (FHA), Housing and Urban Development (HUD). It shall also include a 10-year manufacture’s limited warranty.

    Amazon.com

    Kidde P12040

    The Kidde P12040 is a photoelectric smoke alarm powered by 120VAC and comes equipped with 9V battery backup. This advanced smoke alarm functions as a stand-alone unit or in an interconnected system.

    Product image
    Placement in living room

    Sensor Technology

    The Kidde P12040 uses a photoelectric sensing technology that detects visible particles associated with smoldering fires sooner than ionization alarms. Ionization alarms detect invisible fire particles associated with flaming fires sooner than photoelectric alarms. Kidde recommends that both types of alarms be installed inside the home to protect against both types of fires.

    Installation

    The smoke alarm can be installed on any standard single gang electrical box, up to a 4” octagon junction box. The electrical connection (to the alarm) shall be made with a plug-in connector. A maximum of 24 Kidde devices can be interconnected in a multiple station arrangement. The interconnect system must not exceed the NFPA (National Fire Protection Association) limit of 18 initiating devices, of which 12 can be smoke alarms. With 18 initiation devices (smoke, heat, CO, etc.), interconnected, it is still possible to interconnect 6 strobe lights and or relay modules. The unit shall provide optional tamper resistance that deters removal of the unit from the wall or ceiling.

    Alarm Conditions

    The alarm shall include a test button that will electronically simulate the presence of smoke and cause the unit to go into alarm. This sequence tests the unit’s electronics, battery and horn to ensure proper operation. There is one red LED to indicate the alarm''s current status and mode of operation. During the standby condition, the red LED will flash every 30-40 seconds to indicate the smoke alarm is operating properly. During the alarm condition, the red LED will flash rapidly (one flash per second). The rapid flashing and pulsating alarm will continue until the air is cleared from the products of combustion. The unit will also have one green LED to indicate the presence of power.

    Unit specifications

    What''s in the Box

    One Kidde P12040, including test button, quick-connect power harness, 9V battery backup, and 10 year limited warranty.

    Item Specifications

    • Model: P12040
    • 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: 1 pound
    • Interconnects: Up to 24 Kidde devices
    • LED: Green, receiving ac power / Red, alarm mode
    • Warranty: 10-year limited

    Product information

      Additional Information

    • ASIN: B000P511TY
    • Customer Reviews: 4.5 out of 5 stars 651Reviews
    • Best Sellers Rank:
      #95,103 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
      #109 in Smoke Detectors & Fire Alarms
    • Date First Available: January 11, 2005
    Product Warranty: For warranty information about this product, please click here [PDF ]

    Important information

    Bulb Voltage :

    120 volts

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    Product guides and documents

    Product Documentation (PDF)
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    What''s in the box

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    Customer Questions

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    Q: I frequently get false alarms in the middle of the night with these. Is there another bra…

    A: I wish! I had 120 in an apartment building and couldn''t even begin to tell you of the co…

    Fred | 7 years ago

    Q: Can these be installed in combination with Kidde I12040 alarms? They would be hard wired i…

    A: I have 4 different Kiddie alarms hardwired together and they work fine. One photo Electri…

    Dakota Steve | 6 years ago

    Q: Can you post a pic of the quick connect power harness? I am replacing a defective unit and…

    A: I cannot post a photo, but if you are replacing a Kidde with a kidde, the harness hasn''t c…

    Manufacturer Ann kidde | 3 years ago

    Q: i need replace a fire alarm that was made in1990. it 120 v and only has 2 wires going to i…

    A: The red wire pictured is to interconnect the alarms throughout the house. If you only hav…

    Value Shopper | 6 years ago

    Customer reviews

    4.5 out of 54.5 out of 5
    651 global ratings

    Reviews with images

    Top reviews from the United States

    User08
    1.0 out of 5 starsVerified Purchase
    Still false alarming in 2016
    Reviewed in the United States on September 15, 2016
    Nothing can adequately describe the terror of being wrenched out of a deep sleep in the dead of night thinking your house is on fire. That''s what you''re likely to experience with these detectors. We bought a house and replaced four old Kidde ionization detectors... See more
    Nothing can adequately describe the terror of being wrenched out of a deep sleep in the dead of night thinking your house is on fire. That''s what you''re likely to experience with these detectors.

    We bought a house and replaced four old Kidde ionization detectors with these in December 2015. Stayed with Kidde so we could reuse the existing wiring harnesses. In May 2016, five months later, we had our first false alarm at 3:30 a.m. Since our detectors are interconnected all four went off, which had us screaming and running all over the house. Cleaned it out the next day, reinstalled it, and it false alarmed again that night. Called Kidde and instead of the customer service rep sympathizing with me he dryly asked "Well, did you clean it out?" Not a great response. I told him yes, and he said he would send a replacement out. I installed the replacement unit and as of today it hasn''t false alarmed.. yet.

    Last night (9/14/16) at 3 a.m., however, one of the other original detectors false alarmed so here we are again. I suppose I''ll call Kidde and get another replacement unit that will fail randomly between five and nine months of service. Or maybe I''ll ask them to send an ionization detector this time. While not as good a detecting technology as PE, at least those ones don''t false alarm.

    Side notes:
    - Both of the detectors that false alarmed were located on somewhat high cathedral ceilings on our upper story. The two that have not false alarmed are on flat, low, inside ceilings. Not sure if there''s a correlation.
    - The weird thing is we have two of this exact model in a rental and they haven''t had a single false alarm in 4 years.

    One last tip: If one false alarms on you and you have an interconnected system, look for the one with the flashing red dot. This is the culprit unit.
    85 people found this helpful
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    Chief
    1.0 out of 5 starsVerified Purchase
    Early Morning False Alarms
    Reviewed in the United States on October 13, 2018
    Replaced an entire hardwire system with these detectors and so sorry that I did. They appeared to work fine for over a year. I must echo the experience of others here. In the past two months, several of them started falsing, several times and at the most... See more
    Replaced an entire hardwire system with these detectors and so sorry that I did. They appeared to work fine for over a year.

    I must echo the experience of others here. In the past two months, several of them started falsing, several times and at the most inconvenient times - most often at 2:00 or 3:00 AM, only once at 7:30 AM just before I had to leave for work. It is awful to be awakened by smoke alarms any time. Follow this up with having to run around the house while groggy, attempting to disarm all of them or figure out which one alarmed in the first place, with some of them requiring a ladder to get to, and it becomes ridiculous.

    I actually suspected a problem with the hardwired system wiring at first, until we removed all of the alarms from the wiring and ran them on battery only thinking that would eliminate the false alarms. Instead we found that most of the detectors would randomly sound off even when running standalone. That clinched it for me, and I am unlikely to consider Kiddie detector products again.
    19 people found this helpful
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    Heather F.
    1.0 out of 5 starsVerified Purchase
    Horrible!!!
    Reviewed in the United States on December 4, 2016
    I wish I read some of these reviews before purchasing a second batch of these alarms. First batch went in when we moved into our new home almost two years ago, after many false alarms and kids waking up terrified in the middle of the night I bought a second batch. Same... See more
    I wish I read some of these reviews before purchasing a second batch of these alarms. First batch went in when we moved into our new home almost two years ago, after many false alarms and kids waking up terrified in the middle of the night I bought a second batch. Same problems have persisted. My poor children have become so accustomed to the false alarms in the middle of the night, they don''t even wake up anymore. Don''t buy these unless you hate sleeping. I''m currently researching what brand I''m buying for the third batch.
    36 people found this helpful
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    John O.
    1.0 out of 5 starsVerified Purchase
    False Alarms!!! UGH!!!
    Reviewed in the United States on October 3, 2018
    I bought several of these in both the hardwired/battery backup model, and the battery model. Most of them are not working properly - you get an ear-piercing false alarms, that don''t stop! You can hit the hush button, but that won''t help! I bought the 9v batteries that... See more
    I bought several of these in both the hardwired/battery backup model, and the battery model. Most of them are not working properly - you get an ear-piercing false alarms, that don''t stop! You can hit the hush button, but that won''t help! I bought the 9v batteries that comply with the manufacturers info that is printed in raised white on white letters INSIDE the battery cover. (it''s like trying to read braille! it''s nearly invisible!) Ironically the supplied battery was not on their listed of suitable batteries! (thanks!) The batteries were 6 dollars each and it still doesn''t work! Ours (in 2 different houses) seemed to start false alarming in summer heat. But so far, there''s no fix (and the weather isn''t hot now!)
    I''d buy another brand!
    15 people found this helpful
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    Ya Lun Wang
    1.0 out of 5 starsVerified Purchase
    Buy something else!!! Give false alarms!!!
    Reviewed in the United States on July 6, 2018
    Good bc it''s combo sensor... Horrible bc bought in Apr, had false alarm in June and now July again... Making me write this review... Nothing was blocking inside no dust or dirt of any kind... Fire dept came to the house twice and I have to miss work for this POS... See more
    Good bc it''s combo sensor...

    Horrible bc bought in Apr, had false alarm in June and now July again... Making me write this review... Nothing was blocking inside no dust or dirt of any kind... Fire dept came to the house twice and I have to miss work for this POS smoke detector
    17 people found this helpful
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    Orson Wang
    1.0 out of 5 starsVerified Purchase
    False alarm in 3 out of 8 within a year of installation
    Reviewed in the United States on August 1, 2021
    After installing 8 new ionizing detectors and having 4 of them false-alarm in 6 months, I replaced all 8 with these photoelectric detectors hoping the false alarms would stop. That worked for approximately 9 months. After that honeymoon period, 3 photoelectric detectors... See more
    After installing 8 new ionizing detectors and having 4 of them false-alarm in 6 months, I replaced all 8 with these photoelectric detectors hoping the false alarms would stop. That worked for approximately 9 months. After that honeymoon period, 3 photoelectric detectors have set off false alarms. With all three, I cleaned the detector with a high powered vacuum and reinstalled, only for the false alarm to return within minutes.

    EDIT: At 13 months after the original installation a 4th photoelectric smoke detector has generated a false alarm. The only thing worse than having no smoke detectors is having smoke detectors that constantly cries wolf and that no one in the house trusts.
    2 people found this helpful
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    Julie Tate
    1.0 out of 5 starsVerified Purchase
    False Alarms - buy a different brand!
    Reviewed in the United States on February 4, 2015
    Sitting here at 2:30 am trying to go back to sleep after the false alarm that woke up the whole house. The unit had to be disconnected after the second false alarm in one night. So, I find all of these Amazon reviews for this product...the highest number of reviews being... See more
    Sitting here at 2:30 am trying to go back to sleep after the false alarm that woke up the whole house. The unit had to be disconnected after the second false alarm in one night. So, I find all of these Amazon reviews for this product...the highest number of reviews being one star. This house is a new construction and our electrician wired up several of these in our house. We''ve only been living here for 5 months so it seems ridiculous to already be having smoke detector issues. It seems this product is faulty and based on other reviews I''ve read, the manufacturer doesn''t seem too eager to fix its issues.
    ---------------
    Annnnnddddd.....it happened again! Four months since the last time. These alarms just started going off again and you CANNOT GET THEM STOP! It''s horrible! No fire, no smoke, just irritating, ear-splitting noise! The only way to stop it was to rip them all out of the ceiling. I started to call or write the company, but I''m sure there would be no response that would suit me, so these will be replaced on our dime, but I will at least tell Amazon-land "Save your hearing. Don''t buy this smoke alarm!"
    33 people found this helpful
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    PR
    1.0 out of 5 starsVerified Purchase
    False Alarms
    Reviewed in the United States on June 10, 2017
    Purchased these in 2016 and had terrible problems with false alarms. Switched to new batteries and I thought it took care of the issues. In late May 2017 the devices gave another false alarm. Honestly I think I had one or two faulty Kidde smoke detectors but they were... See more
    Purchased these in 2016 and had terrible problems with false alarms. Switched to new batteries and I thought it took care of the issues. In late May 2017 the devices gave another false alarm. Honestly I think I had one or two faulty Kidde smoke detectors but they were all connected together so I don''t know which one or if it were multiple smoke detectors with issues. I ordered another brand and installed them today.
    20 people found this helpful
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