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First Alert SC9120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm
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ShareFirst Alert SC9120B 120V AC/DC Hardwired with 9V Battery Backup Ionization Smoke Alarm and Carbon Monoxide Combo Alarm
Users say:
This product is easy to install and test, and is a great value. It is a replacement for faulty units, and is 10 years old. It has a small green light to let you know that it is in operation, and is great for adding extra protection around the home.
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Review summary
AI-generated content
This product is easy to install and test, and is a great value. It is a replacement for faulty units, and is 10 years old. It has a small green light to let you know that it is in operation, and is great for adding extra protection around the home.
Pros
- Easy to install
- Dual function (fire and carbon monoxide)
- Reasonable cost
- Effective protection
Cons
- Difficult battery compartment latch
Read original reviews
Description
Hardwired ionization/CO combination alarm meets new construction requirements. Electrochemical Carbon Monoxide Sensor - the most accurate sensor available as compared to other sensing technologies Single button test/silence 9V Alkaline Battery Backup Latching alarm indicator - remembers which unit initiated an alarm Two silence features - can silence the low-battery chirp for up to eight hours or temporarily silence an unwanted nuisance alarm End of Life Signal provides audible notification alarms needs to be replaced Intelligent Sensing TechnologyTM helps reduce the number of nuisance alarms Perfect Mount - allows for easy alignment of alarm Dust Cover Easy Installation/Maintenance - Preferred features include a large opening in the mounting bracket for easy access to wiring. Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation. A battery pull tab keeps the battery fresh until the home is occupied. Battery installation and removal can occur while the unit is mounted to the ceiling or wall via the side load battery compartment. 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. 10-Years Limited Warranty 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) Temperature Range 40 degrees F (4 degrees C) to 100 degrees F (38 degrees C) Humidity Range 10% to 95% relative humidity (RH) Audio Alarm 85dB at 10 feet Test/Silence Electronically simulates a smoke or carbon monoxide condition, causing the unit to alarm. Alarm Reset Automatic when Smoke and/or CO clears. Press test/silence button to reset manually. Interconnections See User Manual Smoke Sensor Dual Ionization CO Sensor Metal Oxide Indicator Lights/Sounds AC Power: Constant Green LED DC Power: Intermittent Green LED Local Alarm: Red LED flashes rapidly Remote Alarm: Red LED out Latching Alarm: Red LED flashes every 5 seconds after local alarm stops Listing UL217 & UL 2034 Standards . By BRK
Buying Options
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Specifications
| Power Source | 120-volt AC and battery backup |
| Brand | Brk |
| Usage | For home or facility use |
| Connectivity | Hardwired |
| Installation | Hardwired directly into the electrical system of your home or facility |
| Detection Method | Ionization smoke sensor and electrochemical carbon monoxide sensor |
| Alarm Sound | Loud siren |
| Number of Sensors Included | Two |
| Additional Features | Universal mounting bracket, tamper-resistant locking pins, latching indicator |
| Battery Backup | Yes |
| Interconnectivity | Yes, with up to 12 other First Alert or BRK hardwired alarms |
| Secondary Sensor | Electrochemical Co Sensor |
| Ratings And Certifications | Indoor/dry/ul |
| Mpn (Part No.) | Sc9120b |
| Diameter | 5.58 In. |
| Warranty | 5-year Limited |
| Case Quantity | 12 |
| Fixture Type | Combo Smoke/co Detector |
| Voltage | 120 |
| Battery Type | 9 Volt Alkaline |
| Weight | 0.63 Lb. |