I had to take down one of the smoke detectors in the house today because it was faulty and was beeping at random times of the day/night for no reason. The ma...Here’s how that process can differ for select First Alert Smoke Alarms: The First Alert 9120B Hardwired Smoke Alarm with Battery Backup: This smoke detector is powered by a 9-volt battery. The battery itself should be replaced every six months. The actual alarm should be replaced every ten years. The hardwired smoke alarm comes with a battery ...In today’s competitive job market, staying updated with the latest job alerts is essential for anyone looking for new career opportunities. With the advent of technology, there are...FIRST ALERT : Style SA9120BPCN : Power Source Battery Powered : Color white : Item Weight 0.01 Ounces : Alarm Audible : Sensor Type Ionization : Manufacturer First Alert : Part Number First Alert - 1039809 : Item Weight 0.01 ounces : Product Dimensions 5.25 x 5.25 x 1.25 inches : Item model number SA9120BPCN ... Product Details. 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 ... First Alert BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 4.7 out of 5 stars. 3,018. 3K+ bought in past month. $35.10 $ 35. 10. FREE delivery Jan 25 - 26 . ... Model XP02-AR, 1-Pack. 4.5 out of 5 stars. 975. 400+ bought in past month. $42.99 $ 42. 99. Join Prime to buy this item at $29.99. FREE delivery Sat, …Printed in Mexico 9120B M08-0134-003 K1 04/07 All First Alert® and BRK® Smoke Alarms conform to regulatory requirements, including UL217 and are designed to detect particles of combustion. Smoke particles of varying number and size are produced in all fires. Ionization technology is generally more sensitive than photoelectricJul 19, 2019 · First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018) Buy it with This item: FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 Pack & Alert BRK 9120B-3 Hardwired Smoke Alarm ... First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am - 5:30pm CT) 1-800-323-9005. Onelink & Smart Home Support. Hours of Operation:BRK Electronics First Alert 9120B-48B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm - Saving 48-Pack Our Price: $20.38 Our Price: $18.48Summary of Contents for First Alert 9120B. Page 1 Position the base of the Smoke Alarm over the mounting bracket and turn. The Fire Department for detailed fire protection …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.The model number is typically located on the back of the alarm and in the user manual. Note: We do not have brackets for expired or discontinued alarms. Related Articles. Lock or Unlock an Alarm’s Mounting Bracket. ... First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am - 5:30pm CT) 1-800-323-9005. Onelink & Smart …There are a number of possible causes for your smoke alarm to keep chirping even with a new battery. ... MPN: 9120B (802) $12.95 Save: $7.00 Quick view First Alert BRK Hardwired Heat Alarm with Battery Backup . MPN: HD6135FB ... After 10 years, it was recommended that we replace our First Alert smoke alarms! So glad this model lasted …Model #1040489. Shop First Alert. 100+ views last week. Get Pricing & Availability . ... Package Quantity: 12. 1. 3. 6. 12. Overview. 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 …CO605 Plug-in Battery Backup Carbon Monoxide Alarm and FIRST ALERT 9120B Smoke Detector Alarm | Hardwired with Backup Battery. 4.7 out of 5 stars. 32. $43.11 $ 43. 11. FREE delivery. FIRST ALERT. BRK CO5120BN Hardwired Carbon Monoxide (CO) Detector with Battery Backup , White. 4.7 out of 5 stars. 1,256. ... first alert model …When it comes to maintaining and repairing your Lennox furnace, one of the most important things you can do is order the correct parts. This ensures that your furnace operates effi...First Alert 9120BA User Manual View and Read online. Est. reading time 32 minutes. 9120BA Smoke Alarm manuals and instructions online. ... Smoke particles of varying number and size are produced in all fires. ... warranty service, contact the Customer Service Team at 1-800-323-9005 To assist us in serving you, please have the model …First Alert Brk 3-Pack Hardwired Ionization Sensor Smoke Detector. Item # 1620738 |. Model # 1039750. Get Pricing & Availability. Use Current Location. Hardwired ionization smoke alarm with 9-volt battery back-up. Latching alarm indicator - remembers which unit initiated an alarm.Designed to help promote household safety, the First Alert 9120B Hardwired Smoke Alarm with Battery Backup can provide a vital early warning for fires. This ...The location of the model number on a Sentrysafe safe unit depends on the type of safe purchased. On fire-protected models, the model number is located on the faceplate, which is n...View and Download First Alert 9120LB user manual online. BRK Electronics Smoke Alarm User's Manual. 9120LB smoke alarm pdf manual download. Also for: 9120. Sign In. Upload. ... please have the model number and date of purchase available when calling. ... Smoke Alarm First Alert 9120B User Manual. Ac powered smoke alarms with battery …24 May 2023 ... First Alert BRK Smoke Alarm 9120B: A chirping sound and a flashing red light every minute = battery. 3.8K views · 11 months ago SILVER OAKWe would like to show you a description here but the site won’t allow us.Product Details. Power Source: Hardwired. Battery Backup: 9V. Sensor: Ionization. Interconnect: Can be linked with up to 18 units (12 Smoke, 6 …Part Number First Alert - 1039809 : Item Weight 0.01 ounces : Product Dimensions 5.25 x 5.25 x 1.25 inches : Item model number SA9120BPCN : Size 1 Count (Pack of 1) Pattern Filter : Voltage 120 Volts : Item Package Quantity 1 : Number Of Pieces 1 : ... First Alert 9120B Smoke Alarm. Gana Hero . Videos for this product. 0:25 . Click to …Low Battery: This is the most common reason for chirping smoke alarms. It's usually a single beep at intervals of 30 to 60 seconds. Replacing the batteries with fresh ones should silence the alarm. End of Life: Smoke alarms don't last forever. If your smoke detector is chirping constantly or in a different pattern than usual, it may be nearing ...View the manual for the First Alert 9120B here, for free. This manual comes under the category smoke detectors and has been rated by 1 people with an average of a 7.5. This manual is available in the following languages: English.If you are in the market for a new microwave, you may have come across various model numbers from GE. Understanding these model numbers can help you make an informed decision and f...The common 9 Volt battery is very easy to replace once a year as recommended. BRK Hardwired & INCLUDED Backup Battery FIRST ALERT SMOKE DETECTOR 9120B ALARM. MODEL: 9120B. Manufacturer's Part Number: 9120B. Hardwired with Backup Battery (INCLUDED). First Alert Smoke Alarm Detector.Current First Alert, Onelink, and BRK alarms use the same wire harness. Refer to our guide, Install a Hardwired Alarm, for more installation information. ... Number of Views 16.56K. Find a replacement alarm model. Number of Views 20.03K. Replacement Mounting Brackets. Number of Views 2.9K. About alarm life expectancy / expiration. Number of …Rated 4.90 out of 5 based on 58 customer ratings. $ 12.95. The First Alert 9120B is an affordable hardwired Smoke Alarm alarm providing accurate sensing technology, easy installation, and connectivity. Bulk Quantity discounts are available – send us a message to receive a quote! item 8 3 Pack First Alert 9120B Smoke Detector Alarm A/C w/ Battery Backup OPEN BOX NEW 3 Pack First Alert 9120B Smoke Detector Alarm A/C w/ Battery Backup OPEN BOX NEW $24.99 +$10.00 shipping This PDF user manual is for the First Alert 9120B AC Powered Smoke Alarm with Battery Back-up and Silence. First Alert 9120B AC Powered Smoke Alarm with Battery Back-up and Silence. SKU: 9120B UPC: 029054513014. Designed to help promote household safety, the First Alert Hardwired Smoke Alarm with Battery Backup can provide early …There is a newer model of this item: First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup, 1-Pack $64.99 ... First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 6-Pack. $68.99 $ 68. 99. Get it as soon as Thursday, May 30. In Stock. ... First Alert : …SKU: 9120B. 4.7 / 5.0. (15460 Reviews) WHERE TO BUY. Designed to help promote household safety, the First Alert Hardwired Ionization Smoke Alarm with Battery Backup can provide early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast … See moreFirst 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 …Rated 4.90 out of 5 based on 58 customer ratings. $ 12.95. The First Alert 9120B is an affordable hardwired Smoke Alarm alarm providing accurate sensing technology, easy installation, and connectivity. Bulk Quantity discounts are available – send us a message to receive a quote!This PDF user manual is for the First Alert 9120B AC Powered Smoke Alarm with Battery Back-up and Silence. First Alert 9120B AC Powered Smoke Alarm with Battery Back-up and Silence. SKU: 9120B UPC: 029054513014. Designed to help promote household safety, the First Alert Hardwired Smoke Alarm with Battery Backup can provide early …1-48 of 78 results for "brk first alert model 9120b" Results. First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 6-Pack. 4.7 out of 5 stars. 15,039. 5K+ bought in past month. $58.78 $ 58. 78. FREE delivery Jan 18 - 23 . Or fastest delivery Jan 16 - 19 . First Alert 9120BFF Smoke Detector, Hardwired Alarm with Battery Backup, …24 May 2023 ... First Alert BRK Smoke Alarm 9120B: A chirping sound and a flashing red light every minute = battery. 3.8K views · 11 months ago SILVER OAKFirst Alert BRK9120B BRK 9120B Smoke Detector HOW TO INSTALL PhotoElectric DETAILED VIDEO EASY !! Buy it HERE! Amazon Link: https://amzn.to/2ZTxWWVSupport ch...Step 4. Remove the battery and dispose of it properly. Replace the old battery with a new 9V battery and close the compartment. You should hear a click to know that the compartment is secured. Add a comment. With the battery backup, the 9120B will protect you and your family even during a power outage. Interconnect the 9120B with up to 12 First Alert or BRK hardwired alarms and up to six other compatible devices like bells, horns or repeaters. When one alarm sounds, all other alarms are triggered, providing coverage of larger spaces. View the First Alert SC9120B manual for free or ask your question to other First Alert SC9120B owners. Manua. ls. Manua. ls. First Alert not categorized · First Alert SC9120B manual. 7.5 · 1. give review. ... Smoke particles of varying number and size are . produced in all fires. I. ... First Alert: Model: SC9120B: Product: not categorized: Language: …7 days per week (8am - 10pm CST) Phone Number: 1-833-663-5465. INTERNATIONAL SUPPORT. For international support (outside of the United States and Canada), check out our worldwide locations. For all European areas, provide phone 0 800 2793643 or general EMEA First Alert support email: [email protected].First Alert : Part Number SC9120BFF-12 : Item Weight 11.2 ounces : Product Dimensions 5.6 x 5.6 x 2.2 inches : Item model number SC9120BFF-12 : Batteries 1 9V batteries required. (included) Color White : Power Source Battery Powered : Item Package Quantity 1 : Certification not_applicable : Included ComponentsFirst Alert 9120BFF Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack. Visit the BRK Store. 4.7 17,406 ratings. 4K+ bought in past month. $1411. …3 x Siterwell Smoke Alarm 10 Year Battery Smoke Detector Photoelectric Alarms. $37.04. Trending at $40.99. Find many great new & used options and get the best deals for BRK First Alert 9120B Smoke Detector at the best online prices at eBay! Free shipping for many products!BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3,188. 3K+ bought in past month. $4090. FREE delivery Mar 20 - 22. Or fastest delivery Tue, Mar 19. More Buying Choices. $27.90 (44 used & new offers) More results.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 our Support Team. FIRST ALERT SUPPORT. 1-800-323-9005. Mon - Fri (7am - 7pm CST) Sat - Sun (8am - 6pm CST) ONELINK …There are a number of possible causes for your smoke alarm to keep chirping even with a new battery. ... MPN: 9120B (802) $12.95 Save: $7.00 Quick view First Alert BRK Hardwired Heat Alarm with Battery Backup . MPN: HD6135FB ... After 10 years, it was recommended that we replace our First Alert smoke alarms! So glad this model lasted …Product Details. Power Source: Hardwired. Battery Backup: 10 Year Sealed. Sensor: Photoelectric. Optipath 360° Technology: Provides 360° of direct access to the smoke sensing chamber. Strobe: Powerful 177 candela LED strobe light provides visual warning for hearing imparied residents. Smart Strobe: Separate flash patterns to distinguish ...First Alert BRK 9120B Hardwired Smoke Alarm with Battery Backup, Single in Smoke Detectors & Fire Alarms. ... Part Number 9120BFF : Batteries 1 9V batteries required. (included) Item model number 9120BFF : Is discontinued by manufacturer No : Size 1 Pack : Colour White : Style Hardwired Alarm : Finish White : Material Synthetic : Pattern Filter …We would like to show you a description here but the site won’t allow us.9120B Hardwired Ionization Smoke Alarm with Battery Backup Fire Extinguishers toggle menu. Fire Extinguisher. Home Fire Extinguishers; Commercial Fire Extinguishers; EZ Fire Spray; View All Fire Extinguishers; Featured FIRE Extinguishers HOME1 Rechargeable Home Fire Extinguisher UL Rated 1-A:10-B:C (Red) KITCHEN5 Kitchen Fire …Are you in need of replacement parts for your Lennox furnace? Finding the right parts can be a challenge, especially if you don’t know where to start. Fortunately, using the model ...Manual. View the manual for the First Alert 9120B6CP here, for free. This manual comes under the category smoke detectors and has been rated by 1 people with an average of a 7.5. This manual is available in the following languages: English.What do First Alert smoke or CO alarms sound like? Learn More > Register your product. Request a combination or key. First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am - 5:30pm CT) 1-800-323-9005. Onelink & Smart Home Support. Hours of Operation: Mon - Fri (9am - 8pm CT) Sat - Sun (9am - 5:30pm CT) 1 … BRK SC-9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3,188. 3K+ bought in past month. $4090. FREE delivery Mar 20 - 22. Or fastest delivery Tue, Mar 19. More Buying Choices. $27.90 (44 used & new offers) More results. What do First Alert smoke or CO alarms sound like? Learn More > Register your product. Request a combination or key. First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am - 5:30pm CT) 1-800-323-9005. Onelink & Smart Home Support. Hours of Operation: Mon - Fri (9am - 8pm CT) Sat - Sun (9am - 5:30pm CT) 1 …Printed in Mexico 9120B M08-0134-003 K1 04/07 All First Alert® and BRK® Smoke Alarms conform to regulatory requirements, including UL217 and are designed to detect particles of combustion. Smoke particles of varying number and size are produced in all fires. Ionization technology is generally more sensitive than photoelectricFirst Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 12-Pack - Amazon.com ... First Alert / BRK Brands, Inc. Part Number 9120BFF-12 : Country of Origin Mexico : Item model number 9120BFF-12 : Batteries 2 AA batteries required. (included) Is Discontinued By Manufacturer No : Size 12-Pack : Pattern Filter : Item …Missiles and missile-defense is one of the main reasons Action Alerts Plus is choosing Raytheon over other defense contractors...RTN There are a lot of reasons to like the defense ...Product Details. Power Source: Hardwired. Battery Backup: 10 Year Sealed. Sensor: Photoelectric. Optipath 360° Technology: Provides 360° of direct access to the smoke sensing chamber. Strobe: Powerful 177 candela LED strobe light provides visual warning for hearing imparied residents. Smart Strobe: Separate flash patterns to distinguish ...Jun 1, 2006 · The 9120B AC-powered smoke alarm with battery backup includes these features: Ionization sensor which helps detect fast flaming fires that consume combustible materials rapidly. 120-volt AC inter-connectable (with maximum 18 compatible devices). The alarm can be interconnected with up to 12 other compatible smoke alarms and six compatible ... An end-of-life timer lets you know when the device should be replaced. Model: SA3210. Dual Sensor Smoke Alarm with 10-Year Sealed Battery. Model: P1210E. 10-Year Battery Photoelectric Smoke Alarm, Slim Profile with Escape Light. Model: CO710. Carbon Monoxide Alarm with 10-Year Battery and Digital Temperature Display.Frequently bought together, First Alert BRK Brands 9120B Hardwired Smoke Alarm with Battery Backup, Single 500+ bought since yesterday, Duracell Coppertop 9V Battery, Long Lasting Batteries, 4 Pack, $14.97, was $18.68, rated 4.6 of out 5 stars from 1018 reviewsWhen it comes to maintaining and repairing your Lennox furnace, one of the most important things you can do is order the correct parts. This ensures that your furnace operates effi...Find more information about your First Alert or BRK product, including manuals, tutorials, and more. ... Search "" Close search. Smoke & Carbon Monoxide Alarms. Model: 4919 / SA4919 / SA4919B. Register your product. Buy now. Setup. About alarm life expectancy / expiration. Learn how to tell if the old alarms in your home are still protecting you. … Step 4. Remove the battery and dispose of it properly. Replace the old battery with a new 9V battery and close the compartment. You should hear a click to know that the compartment is secured. Add a comment. First Alert and BRK alarms have a power indicator light to show you that your alarm is receiving power. Some alarms have a red or green light that blinks every few minutes, while other models blink rapidly or shine a solid light. ... Number of Views 25.77K. Control the Safe & Sound Night Light. Number of Views 4.35K. About the Onelink Safe & Sound's …CO605 Plug-in Battery Backup Carbon Monoxide Alarm and FIRST ALERT 9120B Smoke Detector Alarm | Hardwired with Backup Battery. 4.7 out of 5 stars. 32. $38.77 $ 38. 77. FREE delivery. FIRST ALERT. ... first alert model sc9120b replacement sc9120b first alert 9120b replacement ...Whether you need to make a warranty claim or find replacement parts, there are plenty of reasons why you may need to find the model number for your GE motor. Here are several helpf...USER’S MANUAL. Smoke Alarms. AC Powered Ionization Alarm with Silence Latching Features. Model 9120. Input: 120V AC ~, AC Powered Ionization Alarm with Battery …First Alert maintains high manufacturing standards in all of our products. First Alert, Onelink, and BRK have had no product recalls in the past decade. If a First Alert product isn't working as expected, browse our Help Center for solutions or contact our Support Team. To check product recalls for any consumer product (including First Alert ...Product Details. Power Source: Hardwired. Battery Backup: 10 Year Sealed. Sensor: Photoelectric. Optipath 360° Technology: Provides 360° of direct access to the smoke sensing chamber. Strobe: Powerful 177 candela LED strobe light provides visual warning for hearing imparied residents. Smart Strobe: Separate flash patterns to distinguish ...first alert smoke alarm model number 9120b › BRK First Alert 9120 Teardown. BRK First Alert 9120 Teardown. 4.5 (198) · USD 7.23 · In stock. ... Save money with this pack of the First Alert 9120B Interconnected Smoke These 120VAC hardwired alarms wire directly into your homes . Inch Diameter, Smoke Alarm. Smoke Alarm …Pull the latch with your finger and the battery compartment will swing out. Remove the old batteries and press the test/silence button for 15 seconds. This drains any residual low power from the old batteries. Insert a fresh 9-volt battery, and your fully powered smoke alarm will stop chirping.Here is how you change the battery in a First Alert smoke detector with a slide-out drawer for the battery. Thank you for watching and don't forget to test ...9120B-48P Hardwired Ionization Smoke Alarm w/Battery Backup-Box Pack ... Select a Model: ... helps reduce the number of nuisance alarms;
SKU: 1039935. The First Alert SCO2 Battery-Operated Combination Smoke and Carbon Monoxide Alarm is easy to install and operate. Equipped with an ionization smoke sensor and an electrochemical CO sensor, it provides 2-in-1 protection from smoke produced by flaming fires and carbon monoxide leaks from multiple sources.. Northgate ad
Numbers Station aims to bring the power of GPT-style foundation models to enterprise use cases, starting with data transformation and record matching. When you think of foundation ...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 ... Model SC9120B Input: 120V AC ~ 60 Hz, 0.09A IMPORTANT! PLEASE READ CAREFULLY AND SAVE This user’s manual contains important information about your Alarm’s operation. If you are installing the Alarm for use by others, you must leave this manual — or a copy of it — with the end user. Model SC9120B Printed in Mexico M08-0094-006 K1 08/08 The model number can be helpful if you are searching online for a product manual, or troubleshooting with First Alert Support. Find an extinguisher's serial number: The serial number can be found in a black box after the word, "No." Note: In the example above, EX3622 is not a model number or serial number. It is the UL listing number. Find an ...9120B Hardwired Ionization Smoke Alarm with Battery Backup Fire Extinguishers toggle menu. Fire Extinguisher. Home Fire Extinguishers; Commercial Fire Extinguishers; EZ Fire Spray; View All Fire Extinguishers; Featured FIRE Extinguishers HOME1 Rechargeable Home Fire Extinguisher UL Rated 1-A:10-B:C (Red) KITCHEN5 Kitchen Fire …If your smoke alarm is chirping even though it has a new battery, try these troubleshooting steps to clear out residual charge from the old battery. Remove the alarm from your ceiling or wall. Open the cover and take out the battery. Press and hold the test button for 15-30 seconds. This will fully reset the smoke alarm and drain any charge ...9120B-48P Hardwired Ionization Smoke Alarm w/Battery Backup-Box Pack 9120B Hardwired Ionization Smoke Alarm with Battery Backup Offer valid thru 1/1/01 DetailsJan 16, 2023 · How to Install Hard Wired Smoke Detector - Easy Installation First Alert Smoke Detector Model 9120BFirst Alert Smoke Detector (9120B): https://amzn.to/3FMIoQ... 19 Apr 2015 ... ... alarm unit and user manual. Installation is really easy but if you are hard wiring to the ceiling I suggest you turn off the power to do ...The First Alert BRK SC-9120B Hardwired Combination Smoke and Carbon Monoxide Alarm uses electrochemical CO sensing technology and Ionization sensor for smoke detection. This hardwired dual CO smoke alarm can be connected to other compatible BRK or First Alert hardwired CO smoke detectors within a single-family …Jun 18, 2018 · FIRST ALERT : Style 9120B : Power Source Battery Powered,Hardwired : Color White : Product Dimensions 1.9"D x 5.6"W x 5.6"H : Item Weight 9.6 ounces : Sensor Type Ionization : Manufacturer First Alert : Part Number 9120BFF-3 : Country of Origin Mexico : Item model number BRK 9120B-3 : Batteries 1 9V batteries ... Shop First Alert BRK 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, .