First alert model sc9120b

How to Install Hard Wired Smoke Detector - Easy Installation First Alert Smoke Detector Model 9120BFirst Alert Smoke Detector (9120B): https://amzn.to/3FMIoQ...

First alert model sc9120b. 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 ®...

Inter-connectable with BRK and First Alert hardwired smoke and carbon monoxide alarms. Easy to install universal mount bracket. Simple to use silence/test …

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 … 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. First Alert Home · First Alert Store. Cookie Settings. Contact Us. This site uses cookies and related technologies for site operation, analytics, and third ... Reliable 2-in-1 Smoke & CO Protection. The SMCO100V-AC Interconnected Hardwire Smoke and CO Alarm with Battery Backup and Voice Alerts is a premium choice for protection against both threats. Easily add protection throughout your home or replace existing hardwire alarms using the hardwire quick connect plug - no rewiring needed. The alarm is ... FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide Detector Unboxing#unboxing #asmr #smokedetector*****...

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 ... 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. Model 9120 Input: 120V AC ~, 60 Hz, 0.04A AC Powered Ionization Smoke Alarm with Battery Back-up, Silence and Latching Features Model 9120B Input: 120V AC ~, 60 Hz, 0.04A IMPORTANT! PLEASE READ CAREFULLY AND SAVE This user’s manual contains important information about your Smoke Alarm’s operation.Product Overview. 10YR CO Sensor/10YR End of Life. “Intelligent Sensing Technology” system is designed to reduce nuisance alarms. End-of-Life Signal (CO) 9V Battery …Model 9120 Input: 120V AC ~, 60 Hz, 0.04A AC Powered Ionization Smoke Alarm with Battery Back-up, Silence and Latching Features Model 9120B Input: 120V AC ~, 60 Hz, 0.04A IMPORTANT! PLEASE READ CAREFULLY AND SAVE This user’s manual contains important information about your Smoke Alarm’s operation.Oct 3, 2014 · ‎FIRST ALERT : Style ‎Hardwired Alarm : Power Source ‎Battery Powered,Hardwired : Color ‎White : Product Dimensions ‎1.9"D x 5.6"W x 5.6"H : Item Weight ‎8 ounces : Alarm ‎Audible : Sensor Type ‎electrochemical,ionization : Manufacturer ‎First Alert : Part Number ‎SC9120B : Country of Origin ‎Mexico : Item model number ...

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. 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 Some First Alert models have an optional tamper-proof mechanism that locks the alarm to the mounting bracket. This is ideal for apartments or properties where you don’t want renters to remove the detector and lose smoke/CO protection. ... First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am - 5:30pm CT) 1-800 ...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 ...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 ...Some First Alert models have an optional tamper-proof mechanism that locks the alarm to the mounting bracket. This is ideal for apartments or properties where you don’t want renters to remove the detector and lose smoke/CO protection. ... First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am - 5:30pm CT) 1-800 ...

Gas prices in ravenna ohio.

Understanding the various models and features of First Alert smoke alarms can help you make an informed decision to enhance your home’s safety. The Significance of the Red Light Indicator. The red light indicator on a First Alert smoke alarm is a critical feature, as it serves as a visual cue to the alarm’s status. It communicates crucial ...View and Download First Alert 9120B user manual online. AC Powered Smoke Alarms with Battery Back-up and Silence 120V AC ~, 60 Hz, 0.04A. 9120B smoke alarm pdf manual download. ... The Fire Department for detailed fire protection requirements in buildings not defined as Alarm Models 9120B, SC6120B, SC9120B, 7010B, SC7010B, SC7010BV, …Roadway signs are posted to give you information, help regulate traffic and alert you to potential dangers. Here’s a guide to understanding safety road signs. Roadway signs use col...1 Chirp (about 1x per minute): Low-battery chirp. Causes: Low battery. Batteries facing wrong direction. Battery drawer partially open. Battery pull-tab still in place. Solution: Alarms with 9V or AA batteries require fresh batteries at least once per year. Insert a fresh Duracell, Energizer, or Everready battery to stop the chirp.

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 button and tamper-resistant locking brackets.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 smoke detectors are a crucial component of home safety, providing early warning in the event of a fire. However, homeowners may occasionally experience false alarms or ...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.Model: FIRST-ALERT-SC9120BFF. Qty: Technical Spec: Downloads Technical Spec. Hardwired ionization/CO combination alarm meets new construction requirements. ... Model # SC9120B Weight 8.5 oz Dimension 5.6" dia x 2.0"H Operating Voltage 120V AC 60Hz pure sine wave w/9V battery backup Operating Current .09 amps (standby/alarm) Step 1 Battery. Remove the alarm by rotating it counter clockwise in the mount. The alarm should fall off once rotated enough. The cable should be the only thing holding it in place if done correctly. Add a comment. 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 …Model: 9120B. 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.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...

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.

All BRK Electronics carbon monoxide alarms are listed to UL safety standard 2034 for residential carbon monoxide alarms. Includes 9 volt backup battery. 7 Year limited warranty. Includes: one combination smoke and CO alarm, one 9 volt battery, and user’s manual.Hardwired combination CO smoke alarm features battery backup for constant monitoring.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) ... FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White ... Item model number …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 be‎FIRST ALERT : Style ‎Hardwired Alarm : Power Source ‎Battery Powered,Hardwired : Color ‎White : Product Dimensions ‎1.9"D x 5.6"W x 5.6"H : Item Weight ‎8 ounces : Alarm ‎Audible : Sensor Type ‎electrochemical,ionization : Manufacturer ‎First Alert : Part Number ‎SC9120B : Country of Origin ‎Mexico : Item model number ...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 …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 ... 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.

Ll creek.

Best breakfast in wildwood.

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. Though many people use the terms interchangeably, the experience of anxiety is not the same as a panic attack, though they can be related. Anxiety is an emotional state, brought on...First Alert PRC700V Battery Powered Slim Smoke & Carbon Monoxide Detector with Voice Location and Photoelectric Sensor. First Alert. 55. $42.99. When purchased online. Add to cart. First Alert Hard-Wired w/Battery Back-up Ionization/Photoelectric Dual Sensor Smoke Detector. First Alert New at ¬.First Alert Hardwire Talking Photoelectric Combo Alarm with Voice & Location Feature - SC7010BV. ... MPN: SC9120B (328) $61.95 Save: $8.00 Quick view First Alert Battery Operated Carbon Monoxide and Smoke Detector, Combo-Pack . MPN: 1039879 (24) $34.95 Save: $15 ... 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 ®... FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. What is the difference between models sc9120b and 9120b (no sc)? asked on November 9, 2020. Add a video answer Shoppers …Some First Alert models have an optional tamper-proof mechanism that locks the alarm to the mounting bracket. This is ideal for apartments or properties where you don’t want renters to remove the detector and lose smoke/CO protection. ... First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am - 5:30pm CT) 1-800 ...Model 9120 Input: 120V AC ~, 60 Hz, 0.04A AC Powered Ionization Smoke Alarm with Battery Back-up, Silence and Latching Features Model 9120B Input: 120V AC ~, 60 Hz, 0.04A IMPORTANT! PLEASE READ CAREFULLY AND SAVE This user’s manual contains important information about your Smoke Alarm’s operation.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 BackupChange Smoke Alarm Battery. First Alert 9120BThe National Fire Protection Association (NFPA) recommends changing the batteries in your smoke detectors every 6 months. At First Alert, we offer 10-year smoke alarms that have a built-in 10-year battery, which eliminates the need for battery replacements for the life of the detectors. We also offer hardwired alarms with a battery backup, for ... ….

31 Oct 2018 ... First Alert SC9120b Detector: ... First Alert Smoke Detector Model 9120B ... LOCKED Battery Drawer; First Alert Smoke Alarm Battery Change (SC9120B).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 ...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...9 Jun 2021 ... 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 ...First Alert Brk 3-Pack Hardwired Combination Smoke and Carbon Monoxide Detector. Item # 938622 |. Model # 1040510. Shop First Alert. Get Pricing & Availability. Use Current Location. Electrochemical carbon monoxide sensor - the most accurate sensor available as compared to other sensing technologies. 9V alkaline battery backup.Change Smoke Alarm Battery. First Alert 9120BAre you an employee? Login here. LoadingFirst Alert BRK SC9120B (5 pack) Smoke & Carbon Monoxide Detector w/ Batt Backup. Add. $201.40. ... Understand from First Alert website this model has now been discontinued, I suspect new technology and hopefully not issues with product quality!! joe. 0 0. 5 out of 5 stars review. 4/14/2024. First alert model sc9120b, Change Smoke Alarm Battery. First Alert 9120B, User guide • Read online or download PDF • First Alert SC9120B User Manual • First Alert Safety. Manuals Directory ManualsDir.com - online owner manuals library. Search. Directory. Brands. First Alert manuals. Safety. ... Model. SC9120B. Printed in Mexico M08-0094-004 K1 10/07. LISTED TO. UL 217 . AND . UL 2034., 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. , 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 ..., 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 Canada only., View the First Alert SC9120B manual for free or ask your question to other First Alert SC9120B owners. Manuals. co.uk. Manuals. co.uk. First Alert not categorized · First Alert SC9120B manual. 7.5 · 1. give review. ... First Alert: Model: SC9120B: Product: not categorized: Language: English: Filetype: User manual (PDF), 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. Included adapter plugs eliminate the need for re …, 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:, 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., First Alert SC9120B User Manual View and Read online. Est. reading time 44 minutes. SC9120B Smoke Alarm manuals and instructions online. ... Smoke/CO Alarm Model SC6120B, SC9120B; and First Alert ® Smoke Alarm Models SA4120, SA4120B, SA4121B, SA4919B, SA100B, SC7010B, SC7010BV; Accessory devices models RM3, RM4, ..., Find more information about your First Alert or BRK product, including manuals, tutorials, and more. ... Model: 9120. Download product manual. Register your product., 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., 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., Item model number ‎SC9120LBL : Batteries ‎1 Lithium Metal batteries required. (included) Is Discontinued By Manufacturer ‎No : Size ‎1 Pack : Pattern ‎Alarm : ... First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide (CO) Detector with 10 Year Sealed Battery Backup , White. Share:, This item: First Alert BRK SC9120LBL Hardwired Smoke and Carbon Monoxide (CO) Detector with 10 Year Sealed Battery Backup , White $44.75 $ 44 . 75 Get it as soon as Thursday, May 16, Watch this video to find out about First Alert Fire Shield Surge Protector which monitors the devices plugged into it for frayed wires to prevent fires. Expert Advice On Improving ..., Are you tired of endlessly searching for job opportunities? Do you want to stay updated on the latest job openings without spending a dime? Look no further. In this ultimate guide,..., 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., 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., 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 ®... , First Alert SC9120B User Manual. Download. Like. Full screen Standard. Page of 11 Go. 1. INTRODUCTION. Thank you for choosing BRK Brands, Inc. for your Smoke and Carbon Monoxide Alarm needs. You have purchased a state-of-the-art Smoke & ... Model SC9120B. Input: 120V AC ..., BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White. 25,491. 2K+ bought in past month. $10726. FREE delivery May 9 - 10., Placing an order with free shipping: Add at least the stated minimum threshold of eligible items or total item price to your Shopping Cart. Proceed to checkout and enter a valid U.S. eligible delivery address. Select the "FREE" option on the shipping method selection page. Complete the checkout process and you are all set!, Replace a Kidde, Fyrnetics, or Firex Alarm with First Alert or BRK Model. First Alert offers easy adapter plugs that can help you switch out existing hardwired alarms with First Alert, Onelink, or BRK models. No rewiring is required. Learn more in our video:, 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 …, 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. , 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 ... , Some First Alert models have an optional tamper-proof mechanism that locks the alarm to the mounting bracket. This is ideal for apartments or properties where you don’t want renters to remove the detector and lose smoke/CO protection. ... First Alert Consumer Support. Hours of Operation: Mon-Fri (9am - 8pm CT) Sat-Sun (9am - 5:30pm CT) 1-800 ..., Model SC9120B ~ Input: 120V AC. WHERE TO INSTALL THIS ALARM. 60 Hz, 0.09A. ... Summary of Contents for First Alert SC9120B. Page 1 Consumer Affairs: (800) 323-9005 • Connect the white wire on the power connector to the neutral SC9120B, 7010, 7010B, 7020B, SC7010B, SC7010BV, ..., Model 9120 Input: 120V AC ~, 60 Hz, 0.04A AC Powered Ionization Smoke Alarm with Battery Back-up, Silence and Latching Features Model 9120B Input: 120V AC ~, 60 Hz, 0.04A IMPORTANT! PLEASE READ CAREFULLY AND SAVE This user’s manual contains important information about your Smoke Alarm’s operation., 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 ®..., Model: SC9120B. Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup. Download product manual. Register your product. Buy now. Setup. ... Learn what a red or green light means on a First Alert alarm. General Help. How to Change Batteries in First Alert Alarms. Learn how to replace the batteries in a smoke or CO detector., ‎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 ...