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        Carbon Monoxide Alarm · 120V Hardwired · 9V Battery Backup · BRK CO5120BNA

        120V hardwired carbon monoxide alarm with replaceable 9V battery backup for protection during power outages. Uses an electrochemical CO sensor and is commonly selected where a dedicated hardwired CO alarm is required in residential or light commercial applications.
        BRK Electronics
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        • $53.75
        Available to Order | Typically Arrives in 1 - 3 Weeks From Ontario Factory

        What this product is for

        This carbon monoxide alarm is designed for hardwired 120V AC installations where continuous CO monitoring is required, with a replaceable 9V battery backup to maintain operation during a power outage. It uses an electrochemical sensor and is intended for indoor residential or similar light commercial warning applications.

        Use for

        Use for homes, apartments, condos, hallways outside sleeping areas, utility areas, and other indoor spaces where a hardwired carbon monoxide alarm is specified. It is commonly used for replacement of compatible BRK or First Alert hardwired CO alarms in existing 120V alarm circuits.

        Avoid for

        Avoid using this unit as a smoke alarm, heat alarm, or outdoor detector. Do not use it in wet locations, unconditioned exterior spaces, or where line voltage is not available unless the installation is specifically designed for this type of alarm.

        Best for

        Best for electricians and contractors needing a hardwired CO alarm with battery backup, electrochemical sensing, and a familiar BRK/First Alert replacement format. It suits projects where maintaining protection during a power interruption is important.

        Installed in

        Typically installed on a ceiling or wall in finished indoor spaces. Follow the manufacturer installation guide and applicable Canadian code requirements for placement, spacing, and interconnection compatibility.

        Why this product exists

        This model provides a fixed-power carbon monoxide alarm option for buildings that use 120V alarm wiring, while still keeping the alarm active on battery backup if AC power fails. Compared with battery-only alarms, hardwired units are commonly chosen where permanent power and coordinated alarm infrastructure are preferred.

        Compared with similar products

        Compared with plug-in or battery-only CO alarms, this model is intended for permanent hardwired installation. Compared with combination smoke/CO alarms, this is a dedicated carbon monoxide alarm only, which can be the right choice when smoke detection is handled separately. As typical guidance, hardwired alarms are often selected for new construction, renovations, or like-for-like replacement on existing alarm circuits. Actual suitability depends on wiring layout, compatibility, and local electrical code.

        Specifications

        • Type: Carbon monoxide alarm
        • Power supply: 120V AC hardwired
        • Backup power: Replaceable 9V battery
        • Sensor type: Electrochemical
        • Alarm output: 85 dB
        • Interconnectable: Yes, on compatible hardwired alarm systems
        • Display: No digital display indicated for this model variant
        • End-of-life signal: Yes
        • Latching alarm indicator: Yes
        • Application: Indoor ceiling or wall installation
        • Warranty: Limited 10-year warranty

        Trade note: for service calls and replacements, verify harness style, interconnect compatibility, and local code requirements before ordering.

          • SKU
            CO5120BNA
          • Weight
            1.5 lbs
        • Volts
          120V
        • Type
          CO Detector
        • Battery Backup
          9V
        • Brand
          BRK Electronics
        • Warranty
          5 year

        Minimum Order $20

        We accept the following payment methods:

        Accepted payment methods

        Credit Card can offer cardholders convenience, security, rewards, and the opportunity to build a healthy credit history.

        Click here for Contractor Cash Account


        Trade Credit is a standard financing option for contractors and construction companies to obtain supplies and keep their projects moving. We offer 30-day credit terms to trade contractors on approved applications only. 

        Click here for Contractor Credit Account 


        (Contractor Accounts)

        Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas


        (All Other Accounts)

        Standard Shipping-Free on orders over $499


        Minimum Order Is $20

        Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
         

        • PVC and EMT Pipe 
        • Wire and Cable 
        • Items over 48 inches in length 

        Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.

        Shipping Options:

        • A courier can deliver to your home, office, or your job site
        • Pick up at local depot near you (applies to the following locations)

        Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB 

        Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC 

        Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.

        THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS

        • We cannot deliver to P.O. boxes.
        • A signature may be required for shipments over $500.
        • No weekend delivery.
        • Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.

        Standard Shipping cost on orders less than $499

        Total shipping cost = "Per Shipment" cost + "Per Item" cost.  The "per item" cost is listed in terms of price per pound.

         

        Product Group

        Per Shipment*

        Per Item

        Boxes

        $6.99

        $1.49/lb

        Conduit & Raceway

        $149.99

        $2.49/lb

        Connectors & Fittings

        $5.99

        $1.19/lb

        Data & Structured Home

        $5.99

        $1.19/lb

        Distribution Equipment

        $5.99

        $1.19/lb

        Emergency Lighting

        $6.99

        $1.49/lb

        Heating & Ventilation

        $6.99

        $1.49/lb

        Lighting Controls

        $5.99

        $1.19/lb

        Lighting Indoor

        $6.99

        $1.49/lb

        Lighting Outdoor

        $6.99

        $1.49/lb

        Tools

        $4.99

        $.99/lb

        Wire & Cable

        $49.99

        $2.29/lb

        Wiring Devices

        $5.99

        $1.19/lb

        Any combination of the above items

        Highest applicable per-shipment charge

        As above

        Effective Date: August, 15, 1998

        At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:

        Returns

        Defective Items:

        • If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
        • To initiate a return, please contact our customer service team with your order number and a description of the defect.

        Non-Defective Items:

        • We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.

        Return Process

        Authorization:

        • Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
        • Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.

        Shipping:

        • Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.

        Condition:

        • Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.

        Refunds

        • Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
        • Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.

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