Brk 4120b replacement

Smoke Alarms. Browse Products. Browse Articles. Carbon Monoxide Alarms. Combo Smoke & Carbon Monoxide Alarms. Wireless Interconnect. Z-Wave. Discontinued. Register your product.

Brk 4120b replacement. Recommended replacement for the following obsolete models: BRK 4120B BRK 4120SB BRK 86RAC First Alert SA4120B First Alert SA4121B First Alert SA4919B. First Alert 120VAC Hardwired Smoke Alarm with Battery Backup - SA9120BCN. What is the proper placement of smoke alarms?

120VAC Hardwired Smoke Alarm w/ Battery Backup Features: 120vac hardwired, easily replace existing or install new hardwired alarms into home's electrical system. Battery backup provides added safety during power outages. Mute button silences unnecessary alarms. This feature also tests alarm functions with same button.

Brk electronics smoke detector 4120b replacement : lean how to installBrk electronics smoke detector 4120b replacement : lean how to install Mains powered ionisation smoke alarm with alkaline battery back-up brkBrk 120 volts hard wired with battery back up smoke and carbon monoxide.BRK 9120LBL Hardwired Smoke Detector with Adapter Plugs for Easy Replacement , White. 414. 50+ bought in past month. $2549. List: $30.99. FREE delivery Tue, Apr 2 on $35 of items shipped by Amazon. Only 7 left in stock - order soon. More Buying Choices. $23.00 (27 new offers)We would like to show you a description here but the site won’t allow us.View and Download BRK electronic 4120 AC user manual online. BRK Electronics SMOKE ALARMS USER'S MANUAL 4120SB, 4120B, 4120 AC. 4120 AC smoke alarm pdf manual download. Also for: 4120sb, 4120sab, 4120b, 4120ab, 4120. ... All the batteries specified above are acceptable replacement batteries for this unit. Page 18: Using The … Home > BRANDS > BRK Electronics > BRK Electronics Smoke Alarm > First Alert 9120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm (Upgraded to SMI100-AC) This BRK 9120B is a recommended replacement for the following old BRK / FirstAlert models: The BRK & First Alert 9120B was introduced in 2004 as a replacement for the 4120B [3]. The old plastic ionization chamber with a metal top was replaced by an all metal chamber to shield electrical noise. The integrated circuit (IC) was upgraded. The BRK 9120 can be interconnected to other compatible BRK Smoke Alarms [2].Get brk smoke detector 4120b replacement PDF file for free from our online library. BRK SMOKE DETECTOR 4120B REPLACEMENT The main topic of this particular pdf is concerning BRK SMOKE DETECTOR ...

1039746 Plug-In Carbon Monoxide Alarm with Battery Backup & Digital Display General Help. Remove an Alarm from the Ceiling or Wall. Learn how to remove a First Alert smoke, CO, or combo smoke/CO alarm from its mounting bracket. Find a replacement …10-Year Limited Warranty On Alarm. Model #. 4120B. Operating Voltage. 120V AC 60Hz w/ 9V battery backup (4120B only) Interconnections. Up to 11 additional BRK smoke …Smoke Alarms. Browse Products. Browse Articles. Carbon Monoxide Alarms. Combo Smoke & Carbon Monoxide Alarms. Wireless Interconnect. Z-Wave. Discontinued. Register your product.Brk electronics smoke detector 4120b replacement : lean how to install. Brk electronics smoke detector 4120b replacement : lean how to installDetector detectors brk monoxide hardwired alarms Brk electronic smoke alarm 2002rac user guideBrk sc9120b.. Check Details Check Details. Amazon Deal: First Alert BRK Hardwired Smoke Detector. Check Details

To find a replacement for an old smoke or CO alarm, search for your model number in the First Alert Help Center: Click the search icon at the top of the page. Type the model number you want to find a replacement for. Choose your model to view its product help page and updated model number (if applicable). If your alarm is more than 12-20 years ...1039746 Plug-In Carbon Monoxide Alarm with Battery Backup & Digital Display 9120B-48P Hardwired Ionization Smoke Alarm w/Battery Backup-Box Pack SKU: 9120B-48P 1-48 of 103 results for "brk model 4120b" Results. ... FIRST ALERT BRK 9120LBL Hardwired Smoke Detector with Adapter Plugs for Easy Replacement , White. 4.6 out of 5 ... PAGE 1. User’s Manual Smoke Alarms • AC Powered Ionization Smoke Alarm with Battery Back-Up and Silence Feature Cat. 4120SB Input: 120V AC, 60Hz, 0.5A AC Powered Ionization Smoke Alarm with Battery Back-up Cat. 4120B Input: 120V AC, 60Hz, 0.5A Ionization smoke alarms are generally more effective at detecting flaming fires which consume combustible materials rapidly and spread quickly.

Golden corral hospitality lane.

PAGE 1. User’s Manual Smoke Alarms • AC Powered Ionization Smoke Alarm with Battery Back-Up and Silence Feature Cat. 4120SB Input: 120V AC, 60Hz, 0.5A AC Powered Ionization Smoke Alarm with Battery Back-up Cat. 4120B Input: 120V AC, 60Hz, 0.5A Ionization smoke alarms are generally more effective at detecting flaming fires which …Brk smoke alarm manual 4120b 9120b detector usermanual brk Brk manualslib manual smoke data2 Brk: 7010bsla – superior fire alarm sales & service. User Manual and Diagram Full List. See more Schematic and Diagram DB. Menu. ... Brk electronics smoke detector 4120b replacement : lean how to installBrk hardwired 9120b …Alarm Chirps with New Battery. Learn what to do if your smoke alarm is chirping even after you install new batteries. About our 10-Year Battery Alarms. Learn about 10-year-battery alarms offered by First Alert and BRK.SC9120BA Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup. SKU: SC9120BA. Hardwired combo smoke and CO alarm with replaceable battery backup. AC 120V interconnectable with silence and latching features. Includes Ionization smoke-sensing technology, electrochemical carbon monoxide sensor and a 9V battery. Available in …SKU: SC9120B. 4.8 / 5.0. (334 Reviews) WHERE TO BUY. The First Alert SC9120B Hardwired Combination Smoke and Carbon Monoxide Alarm is a hardwire alarm with battery backup. The hardwired detector includes a 9-volt battery backup for continued function in the event of a power outage. This combination fire and CO detector features a test/silence ...Brk Electronic 4120B Manuals Check Details Brk electronics smoke detector 4120b replacement : lean how to install. Brk electronics smoke detector 4120b keeps chirping noise : is yourBrk manualslib alarm Brk first alert smoke alarm manualSmoke carbon monoxide alarm brk combo alert first hardwired battery brands detector year backup sealed wired ...

Find what you need here. Call BRK Consumer Support. To speak with a First Alert representative, click the "Need Help" button and submit your question. If we can't find an answer for you right away, you have the option to connect with a live agent via phone. Contact the First Alert support team via email or phone. We're open 7 days a week.Brk smoke carbon monoxide alarmMonoxide carbon alert brk first smoke alarm detector combination pack walmart volt battery 3x backup hardwire Brk electronic smoke alarm user manual pdf downloadBrk electronics smoke detector 4120b replacement : lean how to install a smoke alarm in this.Brk electronics smoke detector 4120b replacement : lean how to installSmoke alarm alert brk first battery monoxide carbon hardwired backup hardwire interconnected grainger combination detectors review boolpool depot zoom roll Brk electronics smoke detector 4120b replacement : lean how to installBrk electronic smoke …Alarm Replacement Guide. If an alarm needs to be replaced and is no longer available, this guide will provide an updated model recommendation. Smoke Alarms. Replace 0916 with i9060. Replace 0910 with i9010. Replace i4618 with i4618AC. Replace 1276 with i12060A. Replace 0976 with i9070.Product Overview. 10-Year Sealed Battery, for continuous protection. No battery replacements required for the life of the alarm. Low profile design, sleek, contemporary design blends with any décor. Test/Silence Button, temporarily silence or test the alarm with one-touch easy access button. End-of-life warning lets you know when it’s time ...The BRK 9120B Hardwired Smoke Alarm with Battery Backup. This 120 volt AC smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast flaming fires and alerts you with a loud 85 decibel alarm. Designed to be wired directly into your home's electrical system, this hardwired smoke detector features a backup battery that ...Brk electronic 9120 series technical specifications pdf download. Brk first-alert-9120b-smoke-detector-amp-alarm-ac-powered-with-battery-backBrk electronics s-1208 manual Brk 9120b manual9120b manuals. Brk electronics smoke detector 4120b replacement : lean how to installBrk 9120b manual Brk electronic sc6120b user manual … Home > BRANDS > BRK Electronics > BRK Electronics Smoke Alarm > First Alert 9120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm (Upgraded to SMI100-AC) This BRK 9120B is a recommended replacement for the following old BRK / FirstAlert models:

Brk electronics smoke detector 4120b replacement : lean how to installSmoke alarm alert brk first battery monoxide carbon hardwired backup hardwire interconnected grainger combination detectors review boolpool depot zoom roll Brk 83r manualzz detectorBrk 5 5/8 in carbon monoxide and smoke alarm with 85 db @ 10 ft audible.

What is the best smoke and carbon monoxide detector replacement for my BRK Electronics Model No. 4120B smoke detector (120 Vac, 40 Hz, 0.05 A), preferably one with similar dimensions that can be order … read moreAfter an alarm is turned on for the first time, it should last approximately 7-10 years in normal operating conditions. This can vary slightly based on the model you own. Check your alarm's manual for the exact warranty period. If your alarm is more than 10 years old, it's time for a replacement. First Alert's Smoke / CO Warranty begins at the ...BRK Electronics First Alert SC6120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SC9120B) Our Price: $39.58. Add To Cart. BRK Electronics First Alert SCO500 OneLink Wireless Battery Smoke/CO Combo Alarm with Voice (Upgraded to SCO500B) Our Price: $40.04.Thank you for choosing BRK Brands, Inc. for your Smoke and Carbon. Monoxide Alarm needs. You have purchased a state-of-the-art Smoke & ... Drawer allows for easy battery replacement without removing the alarm. from the ceiling or wall. ... 7010, 7010B, 4120, 4120B, 4120SB, 4919, 2002RAC, 100S, 5919,Replacing a roof is an expensive and important job that can take a significant chunk out of your budget. Knowing the average cost to replace a roof can help you plan for the expens...Smoke Alarm - BRK Model 4120SB Teardown. The BRK & First Alert 4120 was introduced in 1998. It was replaced by the BRK 9120 in 2004 [3]. For Maximum Resolution, Click on the Body of a Picture. >. Front of BRK/First Alert Smoke Alarm Model 4120. BRK/First Alert Model 4120 Specifications on Box. 1039746 Plug-In Carbon Monoxide Alarm with Battery Backup & Digital Display

Chesapeake bay wind forecast.

Eliza bleu timcast.

Replacing the kitchen faucet in your home is not that difficult. Watch this video to find out how to go about it. Expert Advice On Improving Your Home Videos Latest View All Guides...This BRK 9120B is a recommended replacement for the following old BRK / FirstAlert models: BRK 4120B; BRK 4120SB; FirstAlert SA4120B; FirstAlert SA4121B; FirstAlert SA4919B; Our Price: $ 719.04. Model: BRK-9120B-48P. Qty: Technical Spec: Downloads Technical Spec ...Brk electronic smoke alarm 2002rac user guideBrk smoke alarm manual 4120b Brk electronics smoke detector 4120b keeps chirping noise : is yourBrk electronics smoke detector 4120b replacement : lean how to install. 83r brk manualzz detectorManualslib brk alarm Brk smoke alarm manualBrk smoke hardwired detector.9120B-48P Hardwired Ionization Smoke Alarm w/Battery Backup-Box Pack SKU: 9120B-48P BRK Electronics First Alert SC6120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm (Upgraded to SC9120B) Our Price: $39.58. Add To Cart. BRK Electronics First Alert SCO500 OneLink Wireless Battery Smoke/CO Combo Alarm with Voice (Upgraded to SCO500B) Our Price: $40.04. Manufacturer: BRK Electronics | Catalog # 4120B | Cooper Electric Part # 1466915. $34.38/ea. ea. Add to Cart. Compare. Log in or register to view your price, purchase history, and more! Out of stock, please contact your sales representative for availability and lead times. BRK 4120B 120V SMOKE DETECTOR. Technical Specs.Yes. You can replace a smoke detector with a combination smoke/CO unit. All modern First Alert and BRK alarms use the same wire harness and connector. If the alarms in your home are interconnected with 120V AC interconnection, keep in mind that only CO and combination detectors will alarm in the event of a high CO condition. Shop First Alert BRK 6-Pack Hardwired Ionization Sensor Smoke Detector in the Smoke Detectors department at Lowe's.com. The BRK 9120B Hardwired Smoke Alarm with Battery Backup. This 120 volt AC smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, All First Alert ® and BRK Smoke Alarms conform to regulatory requirements, ... End of Life Indicator: Alerts user when alarm requires replacement Integrated Photoelectric Smoke Alarm and Strobe Light: One device includes both a photoelectric smoke alarm and a strobe light. Requires only one electrical box.Smoke alarms should be replaced 10 years from the date of manufacture. Combo smoke/CO alarms should be replaced after 5-7 years (depending on the model). Put the alarm back on the ceiling or wall if it is less than 10 years old. Replace alarm (s) older than 10 years with new units. Repeat the process with all alarms in your home. Learn more ... ….

Brk electronics smoke detector 4120b keeps chirping noise : is yourBrk electronics smoke detector 4120b replacement : lean how to install Brk smoke detector manual 9120baRanking the best smoke detectors …Troubleshoot Chirping on CO Alarms. Learn More >. Remove an Alarm from the Ceiling or Wall. Learn More >. Proper placement for smoke alarms, CO alarms, and fire extinguishers. Learn More >. Smoke or CO Alarm Expiration Dates: Frequently Asked Questions. Learn More >. About alarm life expectancy / expiration.This BRK 9120B is a recommended replacement for the following old BRK / FirstAlert models: BRK 4120B; BRK 4120SB; FirstAlert SA4120B; FirstAlert SA4121B; FirstAlert SA4919B; Our Price: $ 719.04. Model: BRK-9120B-48P. Qty: Technical Spec: Downloads Technical Spec ... 9120B-48P Hardwired Ionization Smoke Alarm w/Battery Backup-Box Pack SKU: 9120B-48P 10-Year Limited Warranty On Alarm. Model #. 4120B. Operating Voltage. 120V AC 60Hz w/ 9V battery backup (4120B only) Interconnections. Up to 11 additional BRK smoke detectors and 6 compatible devices such as bell, repeaters, or switches. Listing. UL Listed to U.S. and Canadian safety standards. Find more information about your First Alert or BRK product, including manuals, tutorials, and more. Brk electronics smoke detector 4120b replacement : lean how to installBrk first alert smoke alarm manual Brk electronic smoke alarms user manual pdf downloadBrk manualslib smoke data2 manual. Brk smoke user alarm electronic manualBrk electronics smoke detector model no 86rac : ® hd6135f heat detector Brk electronic 9120lbla …Overview. For over 60 years, BRK has built a legacy of trust and innovation delivering unparalleled reliability in fire safety. Our full line includes smoke alarms, carbon monoxide alarms, heat alarms, fire extinguishers, relays, motion sensors, fire escape ladders and smart home products. BRK is your partner for safety and security. First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 2,737. $3400. FREE delivery Oct 27 - Nov 2. Or fastest delivery Wed, Oct 25. Only 2 left in stock - order soon. More Buying Choices. $33.90 (42 new offers) Another way to buy. Troubleshoot Chirping on CO Alarms. Learn More >. Remove an Alarm from the Ceiling or Wall. Learn More >. Proper placement for smoke alarms, CO alarms, and fire extinguishers. Learn More >. Smoke or CO Alarm Expiration Dates: Frequently Asked Questions. Learn More >. About alarm life expectancy / expiration. Brk 4120b replacement, This BRK 9120B is a recommended replacement for the following old BRK / FirstAlert models: BRK 4120B; BRK 4120SB; BRK 86RAC; FirstAlert SA4120B; FirstAlert SA4121B; FirstAlert SA4919B; Our Price: $ 14.98. Model: FIRST-ALERT-9120B. Qty: Technical Spec: Downloads Technical Spec ..., After an alarm is turned on for the first time, it should last approximately 7-10 years in normal operating conditions. This can vary slightly based on the model you own. Check your alarm's manual for the exact warranty period. If your alarm is more than 10 years old, it's time for a replacement. First Alert's Smoke / CO Warranty begins at the ..., Mar 31, 2018 ... EASY Smoke alarm battery replacement. how to change a battery in your smoke detector. Danny Johnson's Garage•129K views · 13:36. Go to channel ..., After an alarm is turned on for the first time, it should last approximately 7-10 years in normal operating conditions. This can vary slightly based on the model you own. Check your alarm's manual for the exact warranty period. If your alarm is more than 10 years old, it's time for a replacement. First Alert's Smoke / CO Warranty begins at the ..., Product Overview. 10-Year Sealed Battery, for continuous protection. No battery replacements required for the life of the alarm. Low profile design, sleek, contemporary design blends with any décor. Test/Silence Button, temporarily silence or test the alarm with one-touch easy access button. End-of-life warning lets you know when it’s time ..., General Help. Remove an Alarm from the Ceiling or Wall. Learn how to remove a First Alert smoke, CO, or combo smoke/CO alarm from its mounting bracket. Find a replacement …, Find more information about your First Alert or BRK product, including manuals, tutorials, and more. , I forgot to mention in the part where my neighbor had the BRK 4120B’s with the small LED’s and that rare BRK SC6120B smoke/CO combo alarm that I talked about..., To find a replacement for an old smoke or CO alarm, search for your model number in the First Alert Help Center: Navigate to https://support.firstalert.com/s/ Click the search icon …, 4120SB, 4120B, 4120 AC Powered Ionization Smoke Alarm with Battery Back-Up and Silence Feature Cats. 4120SB, 4120SAB Input: 120V AC, 60Hz, 0.05A AC Powered Ionization Smoke Alarm Cat. 4120 Input: 120V AC, 60Hz, 0.05A Smoke particles of varying number and size are produced in all fires. Ionization technology is generally more, First Alert is a leading brand of fire safety products, including smoke alarms, carbon monoxide detectors, and combination alarms. Learn how to protect your home and family from fire and carbon monoxide hazards, and explore different models, features, and installation guides for each product category. First Alert also offers wireless and plug-in …, Replacing a roof is a major home improvement project that can be expensive. Knowing the cost of replacing a roof is important for homeowners who are considering this type of projec..., 9120BA Hardwired Ionization Smoke Alarm with Battery Backup. Model 9120BA is a wire-in, 120V AC 60Hz single and/or multiple station smoke alarm specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories and other multi-family dwellings. Available in Canada only., Alarm Chirps with New Battery. Learn what to do if your smoke alarm is chirping even after you install new batteries. About our 10-Year Battery Alarms. Learn about 10-year-battery alarms offered by First Alert and BRK., Welcome to the BRK Help Center. Search. Search "" Find answers about a product: Smoke Alarms. CO Alarms. Combo Alarms. Fire Extinguishers. Wireless Interconnect ... , Without this information, responding to your question or concern can be delayed. Calling our Consumer Service department will always provide the most effective and timely …, Recommended replacement for the following obsolete models: BRK 4120B BRK 4120SB BRK 86RAC First Alert SA4120B First Alert SA4121B First Alert SA4919B. First Alert 120VAC Hardwired Smoke Alarm with Battery Backup - SA9120BCN. What is the proper placement of smoke alarms?, Power Source: Hardwired. Battery Backup: 9V. Sensor: Ionization. Interconnect: Can be linked with up to 18 units (12 Smoke, 6 CO/Heat/Relay) Smart Technology :Helps reduce nuisance alarms. Noise Output: 85 dB in a T3 Pattern. Single Button: One press to silence and test alarm. Easy Installation: Perfect Mount System includes Gasketless Base. , BRK ADF-12 BRK Smoke Alarm Adapter Plug for Firex Hardwire Smoke Alarms, White/Black, Pack of 12. 4.5 out of 5 stars. 527. 100+ bought in past month. $20.50 $ 20. 50. List: $24.99 $24.99. ... brk electronics 4120b replacement first alert sc9120b brk 9120b smoke detector ..., BRK 4120B Smoke Alarm AC Powered with Battery Back-up. Designed for the fastest possible installation! If AC power fails, the battery back-up keeps the smoke alarm working. The BRK 4120B can be interconnected with up to 11 additional BRK smoke detectors and 6 compatible devices such as bell, repeaters, or switches., Smoke alarm strobe 3v photoelectric brk impaired backup hearing battery 120v wire ac light hz dc some sensor volt aaBrk electronics smoke detector 4120b replacement : lean how to install Brk electronics smoke detector model no 86rac : ® hd6135f heat detectorAmazon deal: first alert brk hardwired smoke detector., 120VAC Hardwired Smoke Alarm w/ Battery Backup Features: 120vac hardwired, easily replace existing or install new hardwired alarms into home's electrical system. Battery backup provides added safety during power outages. Mute button silences unnecessary alarms. This feature also tests alarm functions with same button. , In Stock. This item: $7299. First Alert 9120BFF Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack. $1428. FIRST ALERT BRK SC9120FF Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 pack , White. $3342. These items are shipped from and sold by different sellers., BRK 120V AC/DC Smoke Alarm - Alkaline Battery; 9120B-48P Hardwired Ionization Smoke Alarm w/Battery Backup-Box Pack SKU: 9120B-48P ... Universal Replacement Products? Toggle. These will replace a wide range of Resideo and competitive controls, which allow you to have less stock on hand. Image, SKU: 3120B. Hardwired smoke alarm with replaceable battery backup. AC 120V Interconnectable with Silence and Latching features. Includes both Photoelectric & Ionization smoke sensing technology and 2 AA Alkaline batteries. BRK 9V Battery. Utilizes both ionization and photoelectric smoke sensors for maximum protection., San Francisco, CA warning52 °F Partly Cloudy. Manhattan, NY 56 °F Cloudy. Schiller Park, IL (60176) 64 °F Cloudy. Boston, MA 53 °F Cloudy. Houston, TX 77 °F Cloudy. St James's, England ..., Aug 31, 2020 · BRK electronic Smoke Alarm 4120B User Guide Bookreader Item Preview remove-circle Share or Embed This Item. Share to Twitter. Share to Facebook. Share to Reddit ... , 20 results for "brk electronics model 4120b" Results. Best Seller in Smoke Detectors & Fire Alarms. FIRST ALERT. ... BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White ... BRK 9120LBL Hardwired Smoke Detector with Adapter Plugs for Easy Replacement , White. 4.5 out of 5 stars. 414. 50+ …, Brk 86rac smoke detector replacement and additions (uk)Brk electronics smoke detector 4120b keeps chirping noise : is your Brk electronic 4120b manualsBrk manualslib manual smoke data2. Brk manualslib alarmBrk electronic smoke alarm user manual pdf download Brk smoke alert monoxide carbon detector 120vac cloudimg …, Brk electronics smoke detector 4120b replacement : lean how to installBrk first alert smoke alarm manual Brk electronic smoke alarms user manual pdf downloadBrk manualslib smoke data2 manual. Brk smoke user alarm electronic manualBrk electronics smoke detector model no 86rac : ® hd6135f heat detector Brk electronic 9120lbla …, The BRK & First Alert 9120B was introduced in 2004 as a replacement for the 4120B [3]. The old plastic ionization chamber with a metal top was replaced by an all metal chamber to shield electrical noise. The integrated circuit (IC) was upgraded. The BRK 9120 can be interconnected to other compatible BRK Smoke Alarms [2]., When it comes to taking care of your watch, battery replacement is an important part of the process. Replacing a watch battery can be a tricky process, so it’s important to know wh..., Product Details. First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 3-Pack. by FIRST ALERT. 4.7 out of 5. 30,365 global ratings. ›. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in.