10 Best Smoke Detector Firex Hardwired of 2025

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  DETECTS SMOKE: Sounds a loud 85-decibel alarm when smoke is detected - 3 long beeps with red LED light flashing in time, repeating.
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  HARDWIRED & 2 AA BATTERY BACKUP (Included): Operates on 120V AC wiring (installed in the ceiling) with 2 AA alkaline batteries that provide battery backup coverage during power outages.
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  ENHANCED SENSING TECHNOLOGY: Reduces false alarms often caused by cooking. Comprehensively tested to meet the latest UL standards, meets UL 217 9th Edition & FCC standards.
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  SELF-TESTING ALARM: Internal components ensure alarm is always operating as expected. Not a substitute for a manual push test, perform a button test once per week to verify alarm operation.
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  INTERCONNECT CAPABILITY: When one alarm sounds, they all sound, so you can get out faster. (Different models offer different interconnection options and requirements. See User Guide for more info.)
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  3 LED NOTIFICATIONS: LED lights indicate alarm status, green = normal operation, amber = operating error, red = smoke detected.
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  TEST & HUSH BUTTON: Makes it easy to test the 5-inch smoke detector and silence false alarms, should they occur.
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  10-YEAR LIMITED WARRANTY: Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced.

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  6 pack of hardwired smoke alarms, includes battery backup for power outages
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  Tamper resistant locking pins, single button silence/test and loud 85Db alarm
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  120-Volt AC power with 9-volt battery backup (included) to keep alarm functioning during power outage
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  Open mounting design for easy installation with side load battery compartment for quick replacement and interconnect able up to 18 units (12 smoke, 6 co/heat/relay)
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  10-Year limited
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  Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

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  Tamper resist locking feature deters alarm theft
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  Alarm memory flashes red LED indicating which unit was the initiating alarm in interconnected system.
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  TBattery backup provides protection in case of power failure
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  Interconnectable with up to 24 devices (of which 18 can be initiating) including smoke, CO and heat alarms. See users guide for complete instructions.
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  Front battery pull tab allows battery activation without removing alarm from mounting bracket.

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  First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
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  Through early warning interconnect, when one alarm sounds, all compatible alarms will sound
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  Battery backup provides continuous protection during power outages
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  Alarm indicator visually identifies the unit that initiated the alarm
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  Quick Connect Plug included allows for easy installation with no need to rewire

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  SMOKE DETECTION: Model 20SA10 features advanced sensing technology that detects smoke over 25% faster*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
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  HARDWIRED WITH 10-YEAR BATTERY BACKUP: Operates on 120V AC with a built-in 10-year battery; helps provide continuous protection; saves up to $40 over the alarms life in battery replacements; with 10-year limited warranty** from first power-on
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  REDUCED FALSE ALARMS: Uses enhanced sensing technology that helps distinguish between real smoke and everyday cooking or steam; helps reduce false alarms while maintaining quick, accurate detection when smoke is present
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  TESTED FOR SAFETY & PERFORMANCE: Rigorously tested to meet UL 217 10th Edition and FCC standards; designed to help ensure reliable performance and compliance with recognized safety requirements
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  INTERCONNECT CAPABILITY: Connects with other Kidde alarms so when one detects danger, all connected units sound together; helps ensure everyone in the home is alerted to potential hazards***
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  BUILT FOR HOMEOWNERS AND PROFESSIONALS: Designed for those who prioritize dependable, code-compliant protection; supports safety goals for homeowners, property managers, contractors, and professionals seeking long-term home safety assurance

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  Easily replace hardwired Firex smoke alarms with First Alert or BRK smoke alarms
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  Ideal for retrofitting jobs, Package dimensions 1.85 x 8.39 x 5.24 inches, individual unit dimensions are 3 x 1 x 1 inches
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  Compatible with SC9120B, 4120-series, 9120-series, 7010-series, 5919, 2002RAC, SC6120B, HD6135FB, and RM3 First Alert or BRK alarms
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  Compatible with 406 (G-6), 4518 (ADC), 4618 (FADC), 484 (PG-40), 4480 (PAD), 5700 (ADH), and 499 Firex alarms
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  Includes 12 smoke alarm adapter plugs.Refer to the PDF attached below in Technical Specification for User Manual for compatible models and brands

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  Hardwired Alarm with 9V Battery BackupEnjoy uninterrupted protection with our hardwired smoke alarm that operates on 120V AC wiring. Even during severe weather or power outages, the 9V battery backup ensures continuous operation, providing worry-free protection for you and your family.
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  Reduces False Smoke AlarmsConforming to the latest UL 217 9th edition standard,Advanced sensors for more accurate detection of the surrounding environment, reducing false alarms caused by cooking fumes and water vapor. Say goodbye to the hassle of unnecessary alerts and enjoy a peace of mind.
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  One-Touch Silence Mode,Undisturbed sleepNo more disturbances from false alarms or low battery alerts at night. Press the humanized mute button, you can easily mute the smoke alarm for up to 10 hours, allowing you to rest without unnecessary interruptions.
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  Interconnect Capability,Up 12 alarmsWhen one alarm sounds, they all sound. With our interconnected system, you can rest assured that if one alarm is triggered, all alarms will go off simultaneously. This feature allows for faster evacuation, ensuring the safety of everyone in your home.
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  Friendly built-in LED indicatorsSiterlinkGS562A model will be the traditional external indicator built-in, hidden LED indicator, the light is soft and visible, but will not disturb you and your family's sleep, suitable for installation in the children's room.

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  SMOKE DETECTION: Model 20SAR detects smoke over 25% faster*; sounds a loud 85-decibel alarm with red LED light for clear visual warnings; suitable for homes
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  HARDWIRED WITH AA BATTERY BACKUP: Connects directly to 120V AC power and includes two AA batteries for backup operation to help ensure continuous protection during power outages; includes a 10-year limited warranty** from first power-on
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  REDUCED FALSE ALARMS: Uses advanced sensing technology that helps distinguish between real smoke and everyday cooking or steam; helps reduce false alarms while maintaining quick, accurate detection when smoke is present
• 
  TESTED FOR SAFETY & PERFORMANCE: Rigorously tested to meet UL 217 10th Edition and FCC standards; designed to help ensure reliable performance and compliance with recognized safety requirements
• 
  INTERCONNECT CAPABILITY: Connects with other Kidde alarms so when one detects danger, all connected units sound together; helps ensure everyone in the home is alerted to potential hazards***
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  BUILT FOR HOMEOWNERS AND PROFESSIONALS: Designed for those who prioritize dependable, code-compliant protection; supports safety goals for homeowners, property managers, contractors, and professionals seeking long-term home safety assurance

Main Highlights

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  Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure
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  Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm
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  To ensure complete protection make sure to place one on each level of your home and in each bedroom
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  Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected
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  Simple to use, with a single test/silence button, and side load battery compartment tamper resistant locking brackets and universal mounting brackets make installation easy
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  Rigorously tested to meet UL standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage
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  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)
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  Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

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