

Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-inch, Batteries Included, 2 Pack
Key item features
- Advanced Detection: Photoelectric sensor technology detects visible fire particles from smoldering fires, ensuring reliable smoke or fire hazard detection.
- False Alarm Reduction: Sensor technology minimizes false alarms caused by cooking or shower steam, providing accurate alerts.
- Self-Testing Feature: Internal components self-test to ensure the alarm is functioning correctly, though a manual push test is recommended weekly.
- Power Outage Protection: Battery-operated design provides continuous coverage during power outages, ensuring peace of mind.
- Compact Design: The 4-inch size fits easily in small spaces, making it ideal for mobile homes, RVs, or crawlspaces.
- Easy Installation: No wiring needed; simply mount the bracket onto the ceiling and twist the alarm into place. Operates on 2-AA alkaline batteries (included).
- Early Warning: An 85-decibel alarm and red LED light activate upon detecting smoke or fire, providing early warning.
- Battery Alerts: A low battery chirp alerts you when it's time to replace the batteries, ensuring continuous operation.
Specs
- Smoke & carbon monoxide alarm sensor technologyPhotoelectric Sensor
- Fire safety certificationsUL Certification
- Battery life6 months
- Batteries inclY
- Decibel rating85 dB
- Power typeBattery
Reviews summary
- : Made with trustworthy components that ensure longevity.
- : It has a space-saving form factor.
- : Has a slim and contemporary look.
- : Comes with batteries for easy installation.
- : Can be loud and sensitive, but also prone to false alarms.
- Free shipping
Free 90-day returns
(Only one option can be selected at a time)
How do you want your item?
Similar items you might like
Based on what customers bought
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included, 2 Pack $57.00
2 optionsAvailable in additional 2 options$5700current price $57.00Options from $57.00 – $114.00Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included, 2 Pack
664.6 out of 5 Stars. 66 reviewsSave withPickup todayDelivery todayShipping, arrives todayUniversal Security Instruments Inc Sensing Plus, Smoke and Fire Alarm, Multi-Criteria Detection, with 10 Year Sealed Battery $27.97
$2797current price $27.97Universal Security Instruments Inc Sensing Plus, Smoke and Fire Alarm, Multi-Criteria Detection, with 10 Year Sealed Battery
454.5 out of 5 Stars. 45 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included $29.22
2 optionsAvailable in additional 2 options$2922current price $29.22Options from $29.22 – $54.00Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included
1034.4 out of 5 Stars. 103 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch $29.22
2 optionsAvailable in additional 2 options$2922current price $29.22Options from $29.22 – $62.94Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch
2413.9 out of 5 Stars. 241 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup $37.79
2 optionsAvailable in additional 2 options$3779current price $37.79Options from $37.79 – $75.58Kidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup
1883.6 out of 5 Stars. 188 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-Inch, 2 Pack $59.97
2 optionsAvailable in additional 2 options$5997current price $59.97Options from $59.97 – $119.94Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-Inch, 2 Pack
1263.4 out of 5 Stars. 126 reviewsSave withUniversal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup $34.94
2 optionsAvailable in additional 2 options$3494current price $34.94Options from $34.94 – $69.88Universal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup
914.3 out of 5 Stars. 91 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch $34.84
2 optionsAvailable in additional 2 options$3484current price $34.84Options from $34.84 – $63.00Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch
1343.6 out of 5 Stars. 134 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde 10-Year Battery Smoke Detector, Voice Alerts & LED Warning Lights $46.74
$4674current price $46.74Kidde 10-Year Battery Smoke Detector, Voice Alerts & LED Warning Lights
94 out of 5 Stars. 9 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde 9-Volt Smoke Detector Replacement Battery, 2 Count $6.97 Was $9.36
6 optionsAvailable in additional 6 optionsNow$697current price Now $6.97, Was $9.36$9.36Options from $6.97 – $11.66Kidde 9-Volt Smoke Detector Replacement Battery, 2 Count
5144.6 out of 5 Stars. 514 reviewsSave withPickup todayDelivery todayShipping, arrives todayWorry Free 10-Year Living Area Sealed Lithium Battery Operated Smoke Alarm $32.94
$3294current price $32.94Worry Free 10-Year Living Area Sealed Lithium Battery Operated Smoke Alarm
1231.6 out of 5 Stars. 123 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde 9-Volt Smoke Detector Replacement Battery, 2 Count $6.97
$697current price $6.97Kidde 9-Volt Smoke Detector Replacement Battery, 2 Count
144.9 out of 5 Stars. 14 reviewsSave withPickup todayDelivery todayShipping, arrives today
About this item
Product details
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included, 2 Pack
Experience the next level of fire safety with the Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included, model 10SDR, a compact, 4-inch smoke detector that uses photoelectric sensor technology to detect visible fire particles associated with smoldering fires. New, 9th Edition sensor technology reduces false alarms often caused by cooking or shower steam, while internal components of the smoke alarm self-test to ensure that it's always operating as expected. (Self-testing is not a substitute for a manual push test of the alarm. Perform a button test once per week to verify proper alarm operation.) The Kidde Smoke Detectors' compact, 4-inch design, which is smaller than the average 5-inch smoke detector, provides smoke detection in small spaces, such as a mobile home, RV, or crawlspace. When smoke or fire is detected, an 85-decibel alarm will sound and a red LED light will illuminate. The Kidde Photoelectric Smoke Detector is powered by 2-AA alkaline batteries per alarm (included), providing peace-of-mind smoke detection coverage during a power failure. Installation is easy & requires no wiring - simply mount the bracket onto the ceiling & twist and click the smoke alarm into the bracket. The Kidde Smoke Detector will chirp when the alkaline batteries need replacing or as a reminder when its time to replace the alarm, at the end of its 10-year life span. A test-hush button allows you to test the battery operations as well as silence nuisance alarms, should they occur. Install a smoke detector & carbon monoxide detector on every level of your home and near bedrooms to help keep your family safe from fire & poisonous gas. UL Listed with a 10-year limited manufacturer's warranty, which begins when the smoke alarm is powered on. Warranty begins when the smoke alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced. The 10-Year limited warranty is not a battery performance claim. Meets requirements of 9th Edition UL 217 and FCC. Does not meet requirements for CSFM or California Prop 65. Feel confident when you buy from Kidde, the #1 home fire safety brand in North America*. *Based on total household alarm installations as of December 2023.
- Advanced Sensor Technology: photoelectric sensor technology provides advanced smoke detection in sensing visible fire particles associated with smoldering fires to reliably detect smoke or fire hazards
- Reduces Nuisance Alarms: sensor technology reduces false alarms often caused by cooking or shower steam
- Self-Testing Alarms: internal components ensure alarm is always operating as expected. Self-testing is not a substitute for a manual push test of the alarm. Perform a button test once per week to verify proper alarm operation.
- Peace of Mind: the Kidde battery-operated smoke alarm provides coverage during power outages
- Early Warning Detection: upon sensing smoke or fire, an 85-decibel alarm sounds & a red LED will illuminate
- Ideal for Small Spaces: compact 4-inch design fits in tight spaces
- No Wiring Needed: operates on 2-AA alkaline batteries (included) providing easy installation, simply mount the bracket onto the ceiling and twist & click the smoke alarm into the bracket
- Battery Replacement: a low battery chirp alerts you when batteries need replacing
- End-of-Life Alarm: alarm sounds as a reminder when it is time to replace the alarm after 10 years of use after its original power-up date
- Test-Hush button makes it easy to test the smoke detector and silence false alarms, should they occur
- UL Listed: comprehensively tested to meet requirements of UL 217 9th Edition and FCC standards
Specifications
Smoke & carbon monoxide alarm sensor technology
Fire safety certifications
Battery life
Batteries incl
Warranty
Warranty information
Warranty url
Warnings
Ingestion Hazard
Popular items in this category
Best selling items that customers love
Best seller Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included $18.99
Best seller
2 optionsAvailable in additional 2 options$1899current price $18.99Options from $18.99 – $35.78Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included
4874.4 out of 5 Stars. 487 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Batteries Included $49.97
2 optionsAvailable in additional 2 options$4997current price $49.97Options from $49.97 – $94.97Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Batteries Included
1664.6 out of 5 Stars. 166 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde Firex Photoelectric Hardwired Smoke Alarm With Battery Back-up $21.94
$2194current price $21.94Kidde Firex Photoelectric Hardwired Smoke Alarm With Battery Back-up
1123.3 out of 5 Stars. 112 reviewsSave withShipping, arrives todayKidde Firex Battery Operated Kitchen Smoke Detector with Photoelectric Sensor $18.00
$1800current price $18.00Kidde Firex Battery Operated Kitchen Smoke Detector with Photoelectric Sensor
142 out of 5 Stars. 14 reviewsSave withShipping, arrives tomorrowBest seller Kidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included $38.97
Best seller
3 optionsAvailable in additional 3 options$3897current price $38.97Options from $38.97 – $116.91Kidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included
5484.4 out of 5 Stars. 548 reviewsSave withPickup todayDelivery todayShipping, arrives today(4 pack) Kidde Dual Sensor Smoke Alarm, 85 Decibels, KIDDE $111.76 Was $145.88
2 optionsAvailable in additional 2 optionsNow$11176current price Now $111.76, Was $145.88$145.88(4 pack) Kidde Dual Sensor Smoke Alarm, 85 Decibels, KIDDE
574.3 out of 5 Stars. 57 reviewsSave withShipping, arrives in 2 days
Customer ratings & reviews
Reviews summary
- : Made with trustworthy components that ensure longevity.
- : It has a space-saving form factor.
- : Has a slim and contemporary look.
- : Comes with batteries for easy installation.
- : Can be loud and sensitive, but also prone to false alarms.
Customer images






+59 images
Showing 1-3 of 79 reviews
Verified Purchase
Kidde is a recognized name in the smoke detector industry. Assuming it's a good product. I ordered a 2 pack at walmart for a reasonable price. Was actually surprised I would find such a convenient package at walmart, and again, for a pretty good price.
Verified Purchase
Reliable brand
I wanted UL listed reliably designed alarms for my workshop and garage. I installed these on new years so it will be easy to remember to replace the two cheap AA cells each year as a routine. Low battery chirping in those locations will not be too bothersome. The mounting plates are easy to install. In some cases the power goes out (Blown circuit breaker caused by a shorting appliance) before the alarm can sound so AC detectors are of limited value. Lithium batteries last much longer but they also cost much more and I recycle all of my used batteries anyways. I tested these with cigarette smoke and they responded fast. Keep in mind that 10 year old detectors should always be replaced. I have no fire insurance and 5 smoke detectors as well as 4 extinguishers and three fire blankets.
Thanks so much for your thoughtful feedback, James, and for taking such a proactive approach to fire safety!
Verified Purchase
GREAT PRODUCT!!
I just purchased a week ago, so I can't speak as to the battery life BUT the installation was SUPER easy %26 these are so loud that they can be heard outside!!
More items to consider
Based on what customers bought
Best seller Kidde Fire Extinguisher for Kitchen, Residential, Single-Use, 711A $21.21
Best seller
3 optionsAvailable in additional 3 optionsSponsored$2121current price $21.21Options from $21.21 – $63.63Kidde Fire Extinguisher for Kitchen, Residential, Single-Use, 711A
5234.7 out of 5 Stars. 523 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Energizer MAX AA Batteries (16 Pack), Double A Alkaline Batteries $10.79 Was $14.97
Best seller
2 optionsAvailable in additional 2 optionsNow$1079current price Now $10.79, Was $14.97$14.97Options from $10.79 – $119.76Energizer MAX AA Batteries (16 Pack), Double A Alkaline Batteries
25064.7 out of 5 Stars. 2506 reviewsSave withShipping, arrives today1000+ bought since yesterday Duracell Coppertop AA Alkaline Batteries 8/PK $7.11 Was $9.73 88.9 ¢/ea
1000+ bought since yesterday
SponsoredNow$711current price Now $7.11, Was $9.73$9.7388.9 ¢/eaDuracell Coppertop AA Alkaline Batteries 8/PK
171304.7 out of 5 Stars. 17130 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED Light Indicators $27.47
Best seller
3 optionsAvailable in additional 3 options$2747current price $27.47Options from $27.47 – $44.93Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED Light Indicators
13414.7 out of 5 Stars. 1341 reviewsSave withPickup todayDelivery todayShipping, arrives todayIn 100+ people's carts (2 pack) Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch $96.00
In 100+ people's carts
$9600current price $96.00More options from $65.00(2 pack) Kidde Hardwired Combination Smoke & Carbon Monoxide Detector, AA Battery Backup, 5-inch
2114.4 out of 5 Stars. 211 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-COPP-B-LPM $27.94
3 optionsAvailable in additional 3 options$2794current price $27.94Options from $27.94 – $111.76Kidde Battery Operated Carbon Monoxide Alarm with Digital Display KN-COPP-B-LPM
4464.6 out of 5 Stars. 446 reviewsSave withShipping, arrives today1000+ bought since yesterday Duracell PowerBoost AAA Batteries, 8 Pack $6.78 Was $9.73 84.8 ¢/ea
1000+ bought since yesterday
SponsoredNow$678current price Now $6.78, Was $9.73$9.7384.8 ¢/eaDuracell PowerBoost AAA Batteries, 8 Pack
171944.7 out of 5 Stars. 17194 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Duracell Coppertop 9V Alkaline Batteries 2/PK $7.44 Was $9.68 $3.72/ea
Best seller
SponsoredNow$744current price Now $7.44, Was $9.68$9.68$3.72/eaDuracell Coppertop 9V Alkaline Batteries 2/PK
37094.7 out of 5 Stars. 3709 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Kidde Basic Fire Extinguisher for Home, Residential 1A10BC $24.97
Best seller
2 optionsAvailable in additional 2 options$2497current price $24.97Options from $24.97 – $44.68Kidde Basic Fire Extinguisher for Home, Residential 1A10BC
21344.7 out of 5 Stars. 2134 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde Multipurpose Home Fire Extinguisher, UL Rated 1-A:10-B:C, Model KD82-110ABC & 711A Kitchen Fire Extinguisher Value Pack $42.97 $21.49/ea
$4297current price $42.97$21.49/eaKidde Multipurpose Home Fire Extinguisher, UL Rated 1-A:10-B:C, Model KD82-110ABC & 711A Kitchen Fire Extinguisher Value Pack
1544.7 out of 5 Stars. 154 reviewsSave withPickup todayDelivery todayShipping, arrives today1000+ bought since yesterday Great Value Alkaline AAA Batteries, 8 Count (Plastic Free Packaging) $2.97 37.1 ¢/ea
1000+ bought since yesterday
$297current price $2.9737.1 ¢/eaGreat Value Alkaline AAA Batteries, 8 Count (Plastic Free Packaging)
34084.6 out of 5 Stars. 3408 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Fire Gone 16 oz Fire Extinguishing Spray - Aerosol Can -FFF-Foaming Agent -(Pack of 1) Cooking & Household $9.87 Was $10.97
Best seller
2 optionsAvailable in additional 2 optionsNow$987current price Now $9.87, Was $10.97$10.97Options from $9.87 – $17.77Fire Gone 16 oz Fire Extinguishing Spray - Aerosol Can -FFF-Foaming Agent -(Pack of 1) Cooking & Household
4164.6 out of 5 Stars. 416 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde 10-Year Sealed Lithium Battery-Operated Combination Smoke & Carbon Monoxide Detector $60.00
2 optionsAvailable in additional 2 options$6000current price $60.00Options from $60.00 – $106.00Kidde 10-Year Sealed Lithium Battery-Operated Combination Smoke & Carbon Monoxide Detector
3414.1 out of 5 Stars. 341 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Energizer MAX 9V Batteries (2 Pack), 9 Volt Alkaline Batteries $6.91 Was $9.54
Best seller
2 optionsAvailable in additional 2 optionsNow$691current price Now $6.91, Was $9.54$9.54Options from $6.91 – $66.78Energizer MAX 9V Batteries (2 Pack), 9 Volt Alkaline Batteries
15964.8 out of 5 Stars. 1596 reviewsSave withShipping, arrives todayBest seller Kidde Fire Extinguisher for Vehicles, Single-Use, Dry Chemical, 5BC, Strap Bracket Included $17.87
Best seller
2 optionsAvailable in additional 2 options$1787current price $17.87Options from $17.87 – $35.74Kidde Fire Extinguisher for Vehicles, Single-Use, Dry Chemical, 5BC, Strap Bracket Included
5424.6 out of 5 Stars. 542 reviewsSave withPickup todayDelivery todayShipping, arrives todayKidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts $49.97
2 optionsAvailable in additional 2 options$4997current price $49.97Options from $49.97 – $89.94Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts
2304.6 out of 5 Stars. 230 reviewsSave withPickup todayDelivery todayShipping, arrives today1000+ bought since yesterday Energizer MAX AA Batteries (8 Pack), Double A Alkaline Batteries $6.24 Was $8.82
1000+ bought since yesterday
3 optionsAvailable in additional 3 optionsNow$624current price Now $6.24, Was $8.82$8.82Options from $6.24 – $12.48Energizer MAX AA Batteries (8 Pack), Double A Alkaline Batteries
48594.7 out of 5 Stars. 4859 reviewsSave withPickup todayDelivery todayShipping, arrives today1000+ bought since yesterday Great Value Alkaline AA Batteries, 8 Count (Plastic Free Packaging) $2.97 37.1 ¢/ea
1000+ bought since yesterday
$297current price $2.9737.1 ¢/eaGreat Value Alkaline AA Batteries, 8 Count (Plastic Free Packaging)
36874.7 out of 5 Stars. 3687 reviewsSave withPickup todayDelivery todayShipping, arrives todayRollback Energizer MAX AA Batteries (4 Pack), Double A Alkaline Batteries $4.47 Was $4.97
Rollback
2 optionsAvailable in additional 2 optionsNow$447current price Now $4.47, Was $4.97$4.97Energizer MAX AA Batteries (4 Pack), Double A Alkaline Batteries
34624.7 out of 5 Stars. 3462 reviewsSave withPickup todayDelivery todayShipping, arrives todayBest seller Rayovac High Energy AA Batteries (24 Pack), Double A Batteries $16.49
Best seller
3 optionsAvailable in additional 3 options$1649current price $16.49Options from $16.49 – $32.98Rayovac High Energy AA Batteries (24 Pack), Double A Batteries
11374.6 out of 5 Stars. 1137 reviewsSave withPickup todayDelivery todayShipping, arrives today
