First Alert BRK 3120B Hardwired Smoke Detector with Photoelectric and Ionization with Battery Backup

★★★★★ 4.9 61 reviews

US$27.60
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US$27.60
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Management number 218609662 Release Date 2026/05/03 List Price US$27.60 Model Number 218609662
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Product Description The BRK Model No. 3120B is a wire-in, 120V AC 60Hz single and/or multiple station photoelectric and ionization dual sensor smoke alarm specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories and other multi-family dwellings as defined in standard NFPA 101. Model 3120B complies with UL217, CSFM, NFPA 72, HUD, FHA and other agencies that model their codes after the above agencies. It meets building codes where AC/DC photoelectric and ionization combination smoke alarms are required. The BRK 3120B is a state-of-the-art hardwired with battery backup smoke alarm that features dual photoelectric and ionization smoke sensing technologies. This alarm features two latching features and two silence features. Alarm Latch: Easily identifies initiating alarm even after alarm condition has subsided. Low Battery Latch: Identifies which unit is in low battery condition by blinking the green power light. Low Battery Silence: Temporarily silence the low battery chirp for up to eight hours. Alarm Silence: Silence alarm for several minutes. Other features include an85dB horn, single button test/silence, an easy access battery drawer and dust cover. OptiPath 360 Technology: Exclusive patented technology provides 360 degrees of direct access to the smoke sensor. Two locking features are provided to prevent battery theft and/or theft of the unit. Connection to AC power is made with a Quick-Connect wiring harness. Installation is quick, easy and cost effective. From the Manufacturer The BRK Model No. 3120B is a wire-in, 120V AC 60Hz single and/or multiple station photoelectric and ionization dual sensor smoke alarm specifically designed for residential and institutional applications including sleeping rooms of hospitals, hotels, motels, dormitories and other multi-family dwellings as defined in standard NFPA 101. Model 3120B complies with UL217, CSFM, NFPA 72, HUD, FHA and other agencies that model their codes after the above agencies. It meets building codes where AC/DC photoelectric and ionization combination smoke alarms are required. The BRK 3120B is a state-of-the-art hardwired with battery backup smoke alarm that features dual photoelectric and ionization smoke sensing technologies. This alarm features two latching features and two silence features. Alarm Latch: Easily identifies initiating alarm even after alarm condition has subsided. Low Battery Latch: Identifies which unit is in low battery condition by blinking the green power light. Low Battery Silence: Temporarily silence the low battery chirp for up to eight hours. Alarm Silence: Silence alarm for several minutes. Other features include an85dB horn, single button test/silence, an easy access battery drawer and dust cover. OptiPath 360 Technology: Exclusive patented technology provides 360 degrees of direct access to the smoke sensor. Two locking features are provided to prevent battery theft and/or theft of the unit. Connection to AC power is made with a Quick-Connect wiring harness. Installation is quick, easy and cost effective.

  • Dual Photoelectric and Ionization sensing technologies for optimal sensing of smoke particles produced in both flaming and smoldering fires.
  • Two Latching Features
  • Two Silence Features
  • Optipath 360 Technology
  • 2 AA Batteries Included; 10 Year Limited Warranty
  • Equipped with a dual photoelectric and ionization smoke sensor to quickly detect both fast-burning and smoldering fires
  • Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety
UPC 029054007100
Alarm Visual
Brand First Alert
Unit Count 1.0 Count
Sensor Type Photoelectric
Manufacturer First Alert
Model Number 3120B
Power Source Battery Powered
BuiltIn Media First Alert BRK 3120B Hardwired Smoke Detector with Photoelectric and Ionization with Battery Backup
Product Style Hardwired
Item Type Name First Alert BRK 3120B Hardwired Smoke Detector with Photoelectric and Ionization with Battery Backup
Mfr Part Number 3120B
Number of Items 1
Enclosure Material Plastic
Operating Humidity 95 percent
Battery Average Life 4320 Hours
Manufacturer Warranty Description 10 Year Limited Warranty
Global Trade Identification Number 00029054007100

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