BRK 9120 Smoke Alarm, 120V Hardwired w/ Silence Button
Ask a Question
About this Product
The BRK 9120 is a great choice when it comes to affordable smoke alarms. Redeigned from the ground up, BRK created the 9120 model to directly replace past models while providing greatly improved sensing technology, improved installation method, and improved connectivety. All around, the BRK 9120 is the perfect smoke alarm if you are looking for affordability with function.
The BRK 9120 uses new Smart Sensing Technology to reduce in nuissance alarms more efficiently and more accurately than ever before. The BRK 9120 is designed for sleeping rooms in your home, hospitals, hotels, motels, college dormatories and multi-family housing units. Complies with NFPA101, UL217, CSFM, NFPA72, HUD, FHA, and other agencies. Where AC/DC silent smoke alarms are required, this model will work perfectly.
The 9120 model has the ability tobe interconnected within a circuit of alarms and other alert devices such as bells, whistles, repeaters, fans, or switches. (You can connect up to 17 devices, of which 11 can be smoke alarms, and 6 can be alternate devices.
Features:• Ionization Sensor
• Quick Plug-In Power Connector
• 120 VAC; Interconnectable
• Alarm Indication
• Mounting Bracket Lock
• AC Power Indicator
• Easy Install Mounting Bracket
Specifications:• 120V AC
• Alarm Dimensions: 5.6" dia x 2.0" H
• Weight: 6.5 oz
• Operating Voltage: 120V AC 60Hz
• Operating Current: .04 amps (standby/alarm)
• Temperature Range: 40 Degree F (4 Degree C) to 100 Degree F (38 Degree C)
• Humidity Range: 10 percent to 90 percent relative humidity (RH)
• Audio Alarm: 85dB at 10 feet
Write Your Own Review:
Questions & Answers
Hi - I'm replacing the BRK 4120 smoke detectors that are in my house. They were manufactured in 2004. Will the BRK 9120 fit exactly into the existing holes in my ceiling or do I have to make modifications? Also, will the 9120 detectors plug into the existing wiring? Finally, will the 9120B fit just like the 9120 or are there any differences? Thanks very much for your time.
There may be a small difference with the mounting bracket from your 4120 and the new 9120 series but you may be able to use the existing holes. If you should need to make new holes it only requires screwing in 2 screws to hold the mounting bracket.
Does the 9v battery come with each unit?
This unit is only hardwired into the homes electrical system. There is no battery backup. If you are interested in this model with a battery backup please look at the BRK 9120B (Click Here to View).
If instead you would like a smoke alarm that is not hardwired and is instead fully battery powered please follow this link to see our selection of battery powered smoke alarms (Click Here to View).
I have a BRK4120B unit that is starting to beep and flash a red light occasionally. When I removed the casing, it shows a plug in feature. The rest of our smoke alarms have batteries that we can replace. This does NOT appear to have a capability of removing a battery. What do I do? Your website says that this unit was replaced by BRK9120B.
For detectors exceeding 7 years of operation (including the older BRK 4120B models), it is recommended that they be replaced to ensure the sensor is working properly. We recommend replacing your old BRK model with the BRK 9120B, which uses a hardwired wiring harness, while also having a battery back-up. The battery is accessible in the back. These units will run primarily of the hardwired power source unless power outage occurs (in which case, it uses battery power).
If you are a new customer, please register first: