First alert model sc9120b

In today’s digital age, email accounts have become an integral part of our daily lives. Whether it’s for personal or professional use, we rely on email platforms like Gmail to comm...

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.First Alert Hardwired Smoke Alarm with Battery Backup - 9120B. Video. Availability: In Stock. Price: $12.95 $19.95. You Save: $7.00 (35% Off) - 802 Customer Reviews. *On Orders Over $59.00. Add to Cart. Buy 12 & Save 5% Click.First Alert SC9120B User Manual View and Read online. Est. reading time 44 minutes. SC9120B Smoke Alarm manuals and instructions online. Download First Alert SC9120B PDF manual.BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 Pack & Alert BRK 9120B-3 Hardwired Smoke Alarm with Backup Battery, 3 Pack, White, 3 Count 4.8 out of 5 stars 66First 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. BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 Pack & Alert BRK 9120B-3 Hardwired Smoke Alarm with Backup Battery, 3 Pack, White, 3 Count 4.8 out of 5 stars 67 Are you an employee? Login here. LoadingView and Download BRK electronic First Alert SC9120BA user manual online. First Alert SC9120BA carbon monoxide alarm pdf manual download. Also for: First alert sc9120bca. Sign In Upload. Download. Add to my manuals. ... Models SC9120BA, SC9120A, CO5120BNA, SA520CNA, SC7010BA; BRK.

First Alert BRK Brands Hardwired Combo Smoke and Carbon Monoxide Alarm with 10-Year Battery Backup - SC9120LBL. Video. Availability: In Stock. Price: $74.95 $89.95. You Save: $15.00 (16% Off) - 30 Customer Reviews. *On Orders Over $59.00. Add to Cart. Buy 12 & Save 5% Click. Note: Some alarms (like the FG200) do not have mounting brackets. If you're not sure how to remove a particular model, check the user manual. Related Articles. Ceiling or Wall Smoke Alarm Installation. Number of Views 9.41K. Alarm Chirps with New Battery ... First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am ...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...Note: Some alarms (like the FG200) do not have mounting brackets. If you're not sure how to remove a particular model, check the user manual. Related Articles. Ceiling or Wall Smoke Alarm Installation. Number of Views 9.41K. Alarm Chirps with New Battery ... First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am ...Napping is not just for young children or tired parents anymore. Many adults have recognized the benefits of a power nap to boost their productivity and overall well-being. Napping...First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup 158 4.7 out of 5 Stars. 158 reviews Frequently bought together, First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup Summary of Contents for First Alert SC9120B Page 1: Fire Safety Tips WHAT TO DO IN CASE OF FIRE be placed between 4 inches (102 mm) and 12 inches (305 mm) • Connect the black wire on the power connector to the hot wire Alarm Model SC6120B, SC9120B; and First Alert ® Smoke Alarm Models All BRK ®...

Learn how long alarms last when they haven't been activated yet. Install a Battery-Powered First Alert Alarm. Learn the step-by-step process for installing a battery powered alarm. … The SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup includes an adapter plug to allow for easy installation or replacement of existing hardwire alarms. Also equipped with a battery back to provide continuous protection during power outages. Help stop unwanted removal of the detector or backup battery using the ... BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White. 25,189. 1K+ bought in past month. Limited time deal. $9795. Typical: $110.15. FREE delivery Wed, Mar 20. FIRST ALERT.The SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup utilizes First Alert's Precision Detection technology and meets the latest industry …4.0 out of 5 stars First Alert detectors Reviewed in the United States on February 19, 2023 Size: 1 Pack Style: BRK SC9120B Alarm & 9120B Alarm Bundle Pattern Name: Detector Verified PurchaseUse the plastic tab to gently open the battery compartment. Remove the old battery. Look at your 9V battery to identify the positive (+) and negative (-) contacts similar to what is shown in the image. When installing the battery in your alarm make sure they match the same polarity in the battery drawer. Note: the negative side has a larger ...

Big lots crossville tn.

1044368 Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup. SKU: 1044368. NO SELLERS FOUND. Hardwired CO smoke alarm features battery backup for constant monitoring. Can connect to other compatible BRK or First Alert CO smoke detectors. Lights indicate if the alarm is for smoke or for carbon monoxide. Find the model number. The model number for your alarm is a series of numbers or letters, like SCO500. If you're not able to unmount your alarm, you can also find the model number in your user's manual. Find the date of manufacture. The date of manufacture for your alarm is printed in date format on the back of your alarm: YYYY, Month, DD. We have First Alert BRK 7010B smoke detectors, and after realizing that no CO detectors had been installed in our construction project, I purchased these BRK Smoke+CO detectors. To my delight, in spite of the fact that the listed diameter of this SC9120B was slightly larger than the 5" 7010B, both of the detectors fit perfectly into the same ...Find the model number. The model number for your alarm is a series of numbers or letters, like SCO500. If you're not able to unmount your alarm, you can also find the model number in your user's manual. ... 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 ...

First Alert SC9120B Hardwired Smoke & Carbon Monoxide Detector with Battery... (3) $28.00. $6.78 shipping. First Alert BRK Smoke + Carbon Monoxide Alarm AC Powered Cat. SC9120B OPEN BOX. $29.99. Free shipping.120-volt hardwired smoke alarm wires directly into your home's electrical system. Ionization smoke sensor reliably detects particles from fast-flaming fires. Hassle-free installation, …SC9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup. SKU: SC9120B. Hardwired Combo smoke & 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. Select a Model:Are you an employee? Login here. LoadingSC9120BA 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 … The horn chirps 1x per minute. Low battery warning. Install a new Duracell, Energizer, or Everready battery. The horn sounds 3 chirps every minute. Malfunction warning. CO alarm needs to be replaced. Alarms under warranty should be returned to manufacturer for replacement. The horn sounds 5 chirps every minute. Shop First Alert BRK 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowe's.com. The BRK SC9120 hardwired combination smoke and carbon monoxide alarm uses electrochemical Co sensing technology and ionization sensor for smoke detection. This 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 ...Summary of Contents for First Alert SC9120B. Page 1 Smoke larm Models 9120, 9120B, SC6120B, Consumer ffairs: (800) 323-9005 • Connect the white wire on the power connector to the neutral SC9120B, 7010, 7010B, 7020B, SC7010B, SC7010BV, 100S, 4120, www.brkelectronics.com • www.firstalert.com Smoke larm is Silenced wire in the junction …First Alert BRK Brands Hardwired Combo Smoke & Carbon Monoxide Alarm SC9120LBL. ... SC9120B (328) $61.95 Save: $8.00 Overall Rating. 5 30 Reviews. Write a review. 5. 30. 4. 0. 3. 0. 2. 0. 1. 0 ... So glad that I was able to use existing cabling for the SC9120LBL, as well as the smoke only model. Install for all 7 locations was under …SKU: 9120BA. 4.5 / 5.0. (876 Reviews) WHERE TO BUY. 120-volt hardwired smoke alarm wires directly into your home's electrical system. Ionization smoke sensor reliably detects particles from fast-flaming fires. Hassle-free installation, no need to rewire. Easy-to-access battery drawer; 9-volt battery included.

Summary of Contents for First Alert SC9120B. Page 1 Smoke Alarm Models 9120, 9120B, SC6120B, Consumer Affairs: (800) 323-9005 • Connect the white wire on the power connector to the neutral SC9120B, 7010, 7010B, 7020B, SC7010B, SC7010BV, 100S, 4120, www.brkelectronics.com • www.firstalert.com Smoke Alarm is Silenced wire in the …

The SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup includes an adapter plug to allow for easy installation or replacement of existing hardwire alarms. Also equipped with a battery back to provide continuous protection during power outages. Help stop unwanted removal of the detector or backup battery using the ... Find many great new & used options and get the best deals for First Alert SC9120B Smoke and Carbon Monoxide Detector at the best online prices at eBay! Free shipping for many products! ... 3 New Kidde FireX 120V Smoke Alarm Battery Backup Contractor Model i4618AC. $24.99. Trending at $42.50. KIDDE KN-COSM-IBA Hardwired Combination …‎FIRST ALERT : Style ‎Hardwired Alarm : Power Source ‎Battery Powered : Color ‎White : Product Dimensions ‎2.25"D x 5.25"W x 5"H : Item Weight ‎11.2 ounces : Alarm ‎Audible : Sensor Type ‎Electrochemical : Manufacturer ‎First Alert : Part Number ‎SC9120BFF-6 : Item model number ‎SC9120B-6 : Batteries ‎2 AA batteries ...Create an interconnected fire alarm system without the hassle of rewiring with our Interconnected Smoke Alarm by First Alert. Buy yours today! Shop First Alert BRK 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowe's.com. The BRK SC9120 hardwired combination smoke and carbon monoxide alarm uses electrochemical Co sensing technology and ionization sensor for smoke detection. This Are you an employee? Login here. LoadingFirst Alert SC9120B Hardwired Smoke & Carbon Monoxide Detector with Battery... (3) $28.00. $6.78 shipping. First Alert BRK Smoke + Carbon Monoxide Alarm AC Powered Cat. SC9120B OPEN BOX. $29.99. Free shipping.Buy First Alert SC9120B Today. Check the First Alert - Smoke and Carbon Monoxide Alarm with Battery Backup - Hardwired ratings before checking out. ... Model: SC9120B (0) Write A Review. Ask a Question . $44.00. In-Stock. Ships Monday, May 13th. Shipping to 60601 Update Shipping Details First Alert - Smoke and Carbon Monoxide Alarm with …

Mongols logo.

2734 el camino real santa clara ca 95051.

First Alert SA4919B; ... Replaces BRK Model 9120. Q&A Reviews RELATED PRODUCTS. 3%. Add to compare. Close. BRK First Alert - SC9120B Smoke & Carbon Monoxide Alarm, Hardwired, 9V Battery $ 430.99 $ 38.99. Alarm Type: Smoke & Carbon Monoxide: Power Source: Hardwired:First Alert is our retail division, and BRK is our commercial division. Note: Some retailers sell BRK products under the First Alert brand. Although BRK packaging is different, rest assured that you'll receive the same quality First Alert product. Example: Models SA511 (First Alert) and SA511B (BRK) are the same product.All BRK® and First Alert® 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 photo-electric technology at detecting small particles, which tend to be Watch on. If you need to replace an old Firex or Kidde alarm with a First Alert or BRK model, check out our guide: Replace a Kidde or Firex Alarm with First Alert or BRK Model. Learn how to replace an old hardwired smoke or CO alarm with a brand-new one. Nov 21, 2023 · Features of the First Alert SC9120B. ⦁ Is hardwired but comes with a battery backup. This means it constantly monitors the air even if there is a power outage. ⦁ Can link to other First Alert and BKR detectors so long as they are compatible. ⦁ Comes with a light that tells you whether the alarm sounds were due to carbon monoxide or due to ... Summary of Contents for First Alert SC9120B. Page 1 Smoke Alarm Models 9120, 9120B, SC6120B, Consumer Affairs: (800) 323-9005 • Connect the white wire on the power connector to the neutral SC9120B, 7010, 7010B, 7020B, SC7010B, SC7010BV, 100S, 4120, www.brkelectronics.com • www.firstalert.com Smoke Alarm is Silenced wire in the junction box.SKU: 9120BA. 4.5 / 5.0. (876 Reviews) WHERE TO BUY. 120-volt hardwired smoke alarm wires directly into your home's electrical system. Ionization smoke sensor reliably detects particles from fast-flaming fires. Hassle-free installation, no need to rewire. Easy-to-access battery drawer; 9-volt battery included.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 …View and Download First Alert SC9120B user manual online. Smoke & Carbon Monoxide Alarm. SC9120B security system pdf manual download. ... (102 mm) and 12 inches (305 mm) • Connect the black wire on the power connector to the hot wire Alarm Model SC6120B, SC9120B; and First Alert ® Smoke Alarm Models All BRK ®... Page 2 ® is a …Changing out the batteries in one of my smoke alarms today, couldn't find anywhere online that had a clear explanation on how to remove the battery drawer on...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 ... ….

22 May 2014 ... How to Changing Battery in a First Alert Smoke Detector (with Drawer) ... Removing a Faulty Smoke Alarm | First Alert 9120B. Grant W•23K views.As of 2015, qualified individuals can obtain one medical alert bracelet at no charge from the MedicAlert Foundation, according to the organization’s website. To request a bracelet ...Works in Tandem with Other First Alert Alarms. ... MPN: SC9120B (328) $61.95 Save: $8.00 Quick view First Alert Hardwired Smoke Alarm with Battery Backup . MPN: 9120B ... Hope the model stays active in your inventory for … BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 Pack & Alert BRK 9120B-3 Hardwired Smoke Alarm with Backup Battery, 3 Pack, White, 3 Count 4.8 out of 5 stars 67 Find the model number. The model number for your alarm is a series of numbers or letters, like SCO500. If you're not able to unmount your alarm, you can also find the model number in your user's manual. ... 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 ...View and Download First Alert SC9120B user manual online. Smoke & Carbon Monoxide Alarm. SC9120B security system pdf manual download. The First Alert SC9120B is a combination smoke and carbon monoxide detector that is designed to keep your home safe from potential fires and harmful gas leaks. This device operates on two AA batteries and features electrochemical CO sensing technology to detect carbon monoxide, as well as an ionization smoke sensor to detect smoke particles. With a gasketless base and a mounting base that keeps the alarm secure with wide rotation range, the First Alert SC9120B allows for true alignment. The First Alert SC9120B will automatically reset when the smoke or carbon monoxide gas clears. With the latch alarm indicator, the alarm remembers which unit initiated an alarm when interconnected. First Alert Smoke Detector Makes CHIRP Sound HOW TO RESET FIX SOLVEDbuy it here: First Alert BRK9120b6CP Hardwired Smoke Detector https://amzn.to/2QeS26HSup... First alert model sc9120b, 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 ..., When it comes to protecting ourselves and our loved ones from the unpredictable forces of nature, having a reliable emergency weather alert system is essential. One of the most com..., 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 ..., FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide Detector Unboxing#unboxing #asmr #smokedetector*****..., Works in Tandem with Other First Alert Alarms. ... MPN: SC9120B (328) $61.95 Save: $8.00 Quick view First Alert Hardwired Smoke Alarm with Battery Backup . MPN: 9120B ... Hope the model stays active in your inventory for …, The features of a clinical thermometer vary based on the brand name and model, but some include a fever alert, memory recall and waterproof surface for easy cleaning. Clinical ther..., First Alert SC9120B Hardwired Smoke & Carbon Monoxide Detector with Battery... (3) $28.00. $6.78 shipping. First Alert BRK Smoke + Carbon Monoxide Alarm AC Powered Cat. SC9120B OPEN BOX. $29.99. Free shipping., Free returns on most items within 30 days. Enhance your household's fire safety and enjoy greater peace of mind with the First Alert 9120B Hardwired Smoke Alarm with Battery Backup. Equipped with an ionization sensor, this 120-volt hardwired smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm. , As of 2015, qualified individuals can obtain one medical alert bracelet at no charge from the MedicAlert Foundation, according to the organization’s website. To request a bracelet ..., Learn how to install, test, and maintain your SC9120B smoke and carbon monoxide alarm. Find out how to use the silence, latching, and smart interconnect features, and what to …, Jun 1, 2006 · Product Description. Promote greater household safety with the First Alert 9120BFF 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 ... , Model: 3120B. Download product manual. Register your product. Buy now. Setup. Why Replace Smoke Alarms Every 10 Years? ... 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., Smoke Alarms. AC Powered Ionization Alarm with Silence Latching Features. Model 9120. Input: 120V AC ~, AC Powered Ionization Alarm with Battery Silence and Latching. …, In today’s fast-paced digital world, businesses heavily rely on their servers to keep their operations running smoothly. However, server issues can arise unexpectedly and cause sig..., FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White. 24,977. 1K+ bought in past month. $10550. FREE delivery Feb 12 - 13., Shop First Alert BRK Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowe's.com. The BRK SC9120 hardwire combination smoke and CO alarm with battery backup includes these features: quick plug in power connector for easy installation, 120 , Giraffes get very little sleep because they must remain alert for attacks from predators, according to Live Science. They usually sleep for five minutes at a time and get 30 minute..., Watch on. If you need to replace an old Firex or Kidde alarm with a First Alert or BRK model, check out our guide: Replace a Kidde or Firex Alarm with First Alert or BRK Model. Learn how to replace an old hardwired smoke or CO alarm with a brand-new one., 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 ..., Shop First Alert BRK 6-Pack Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowe's.com. The BRK SC9120 hardwired combination smoke and carbon monoxide alarm uses electrochemical Co sensing technology and ionization sensor for smoke detection. This , The horn chirps 1x per minute. Low battery warning. Install a new Duracell, Energizer, or Everready battery. The horn sounds 3 chirps every minute. Malfunction warning. CO alarm needs to be replaced. Alarms under warranty should be returned to manufacturer for replacement. The horn sounds 5 chirps every minute., The National Weather Service (NWS) is an agency that provides crucial information about weather conditions, forecasts, and warnings to help keep the public safe. NWS alerts come in..., When it comes to emergency situations, timely and accurate weather alerts can mean the difference between life and death. In recent years, advancements in technology and meteorolog..., Color Code: White. Alarm Type: Smoke/Carbon Monoxide. Battery: 9V. Power Source Code: Dual. Spec Sheet () 360256 Additional Product Information. Volume 141 Catalog Page: 233, 242. 10-year sensor with 10-year End of Life. 9V alkaline battery backup., Model #9120BP-12ST. Shop First Alert. 100+ bought last week. Hardwired ionization smoke alarm with 9-volt battery back-up. Latching alarm indicator - remembers which unit initiated an alarm. ... First Alert Combination …, First Alert Smoke and CO Alarm Disposal / Recycling. Learn how to properly dispose of old detectors. Install a Hardwired First Alert Alarm. Learn the step-by-step process for installing a hardwired alarm. Find more information about your First Alert or BRK product, including manuals, tutorials, and more. , 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 ... , Shop First Alert BRK Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowe's.com. The BRK SC9120 hardwire combination smoke and CO alarm with battery backup includes these features: quick plug in power connector for easy installation, 120 , Learn what to do if your smoke alarm is chirping even after you install new batteries., BRK® First Alert™ Smoke/CO Combination Alarm ^ Ionization And Electrochemical Sensors. Ionization Smoke Sensing Chamber Technology ^ Test/Silence Button With Automatic Reset ^ 120 Volt, AC, 60 Hz, with 9 Volt DC Alkaline Battery Backup ^ Batteries Included ^ Direct-Wire ^ LED Power/Status Indicator And End-Of-Life Signal ^ …, Oct 6, 2021 · Changing out the batteries in one of my smoke alarms today, couldn't find anywhere online that had a clear explanation on how to remove the battery drawer on... , 31 Oct 2018 ... First Alert SC9120b Detector: ... First Alert Smoke Detector Model 9120B ... LOCKED Battery Drawer; First Alert Smoke Alarm Battery Change (SC9120B)., SKU: 9120BA. 4.5 / 5.0. (876 Reviews) WHERE TO BUY. 120-volt hardwired smoke alarm wires directly into your home's electrical system. Ionization smoke sensor reliably detects particles from fast-flaming fires. Hassle-free installation, no need to rewire. Easy-to-access battery drawer; 9-volt battery included.