New construction and alterations
The adopted Building Code applies to new buildings and can also apply to alterations, changes of use, replacements and other permitted construction work.
A practical guide to New Brunswick smoke-alarm and carbon-monoxide protection for existing homes, rental properties, renovations and new construction, including alarm placement, power, interconnection, replacement planning and Kidde model selection.
This page is provided by MarsLED solely for general educational and product-selection information. It summarizes publicly available New Brunswick legislation, government guidance, adopted-code information and manufacturer information reviewed as of July 18, 2026. It is not legal advice, engineering advice, architectural advice, fire-protection design advice, electrical advice, a code interpretation, an inspection, an approval, or a representation that any product or installation complies with every requirement applicable to a particular property, occupancy, permit, tenancy or project.
Building, fire, electrical, rental and accessibility requirements may be amended, replaced, interpreted differently or supplemented by local bylaws, permit conditions, inspection orders or project-specific requirements. Before purchasing, specifying, replacing or installing an alarm, the customer, owner, landlord, contractor and design professional must independently verify current requirements with the applicable regional service commission, municipality, fire authority, electrical authority, permit issuer and any other authority having jurisdiction.
New Brunswick adopted the National Building Code of Canada 2020 as the minimum building standard and updated the Fire Prevention Act regulation to use the National Fire Code of Canada 2020 and National Building Code of Canada 2020. The 2020-code updates came into force on May 1, 2025.
The adopted Building Code applies to new buildings and can also apply to alterations, changes of use, replacements and other permitted construction work.
The Fire Prevention Act, adopted fire-code standards, inspections and orders may affect ongoing alarm and fire-safety obligations in occupied buildings.
Regional service commissions, municipalities, fire officials and electrical authorities administer permits, inspections and project-specific requirements.
New Brunswick public fire-safety guidance recommends working smoke alarms on every level of the home, including the basement, and outside each sleeping area. Applicable Building Code requirements may be more detailed for new construction, additions, renovations, secondary suites and other permitted work.
Plan smoke-alarm coverage for every level of the home, including the basement, so a fire on another floor can be detected promptly.
Install alarms outside sleeping areas so occupants can receive warning while asleep. Current-code projects may also require alarms in additional locations.
Test alarms using the manufacturer’s instructions, replace batteries where applicable and replace the complete alarm when it reaches the end of its listed service life.
Applicable new construction and renovation work may require permanently connected smoke alarms, backup power and interconnection. The approved arrangement must follow the adopted Building Code, electrical requirements, approved plans and manufacturer instructions.
| System feature | What to verify | Why it matters |
|---|---|---|
| Primary power | Whether the project requires a permanent 120-volt AC connection | The alarm must match the approved electrical and building design. |
| Backup power | Battery type and which alarm functions remain active during an outage | Audible detection and visual-strobe functions may have different backup behaviour. |
| Interconnection | Whether activation of one alarm must cause compatible alarms to sound | Interconnection provides broader warning throughout the dwelling or building. |
| Compatibility | Approved models, wiring harnesses, adaptors and interconnect limits | Different alarm generations may not communicate or connect directly. |
| Electrical authorization | Permit and installer requirements for fixed wiring | Hardwired work must comply with New Brunswick electrical requirements. |
New Brunswick warns that carbon monoxide can accumulate from combustion equipment and poses a particular danger while people are sleeping. Provincial safety guidance recommends installing properly placed carbon-monoxide detectors in the home.
Wood, propane, natural gas, oil and other combustion equipment can produce CO if the appliance, chimney or venting system fails or is used improperly.
CO is especially dangerous during sleep because occupants may not recognize symptoms or wake without an operating alarm.
Applicable Building Code provisions can require CO alarms based on fuel-burning appliances, fireplaces, attached garages and the arrangement of residential suites.
New Brunswick’s Residential Tenancies Act requires landlords to deliver and maintain residential premises in a good state of repair, fit for habitation, and to comply with applicable health, safety, housing and building standards. Required alarm equipment should therefore be installed, maintained and replaced as part of the property’s legal safety obligations.
Landlords must maintain rental premises in a condition fit for habitation and comply with applicable legal health, safety, housing and building standards.
Required alarms should remain correctly installed, operational and within the manufacturer’s stated service life.
Tenants should test alarms as directed, promptly report faults and never remove, cover, disconnect or otherwise interfere with required life-safety equipment.
Alarm selection should begin with the building type and project scope. An expired-alarm replacement in an existing home is different from a permitted renovation, new secondary suite, change of use or new residential building.
| Project context | Planning approach | What to verify |
|---|---|---|
| Existing owner-occupied home | Review coverage on every level and outside sleeping areas | Alarm age, required sensing functions and any local inspection requirements |
| Replacing an expired hardwired alarm | Identify the complete existing alarm network | Voltage, connector, mounting plate, interconnect compatibility and approved adaptor |
| Rental property | Review tenancy, building, fire and inspection obligations | Working alarms, maintenance responsibility and applicable orders or standards |
| Renovation or addition | Review the permit scope under the adopted 2020 code | Required locations, hardwiring, backup power and interconnection |
| Secondary suite or change of use | Coordinate alarm coverage with separation and egress design | Suite layout, interconnected warning, CO triggers and approved plans |
| New residential construction | Follow approved plans and current New Brunswick requirements | Complete smoke/CO layout, power, backup, interconnection and commissioning |
Audible alarms may not provide effective warning for every occupant. New Brunswick’s adopted-code amendments also address visual signal devices in applicable tourist establishments. Where an approved design or occupant need requires visual notification, use a listed device suitable for the project.
The Kidde P4010ACLEDSCA and P4010ACLEDSCOCA product families use an integrated 177-candela LED strobe designed for visual notification.
P4010ACLEDSCA detects smoke only. P4010ACLEDSCOCA-2 adds independent carbon-monoxide detection.
The integrated strobe requires normal AC power. Backup power supports the alarm functions identified by the manufacturer, not necessarily the visual strobe during an outage.
Use this overview to compare functions before purchasing. Final selection must be verified against current New Brunswick requirements, the building layout, existing alarm network, approved plans and manufacturer instructions.

Hardwired smoke and carbon-monoxide alarm with voice warnings, integrated 177-candela LED strobe and sealed 10-year backup battery for the alarm functions.
View P4010ACLEDSCOCA-2
Hardwired smoke alarm with voice warning, integrated 177-candela LED strobe and sealed 10-year backup battery. This model does not independently detect carbon monoxide.
View P4010ACLEDSCA
Replacement guidance for the legacy Kidde P1275CA hardwired smoke alarm. Verify availability, connector, mounting and interconnect compatibility before ordering.
View P1275CA Replacement Guide| Feature | P4010ACLEDSCOCA-2 | P4010ACLEDSCA | P1275CA |
|---|---|---|---|
| Smoke detection | Yes | Yes | Yes |
| CO detection | Yes | No | No |
| Integrated LED strobe | Yes, 177 cd | Yes, 177 cd | No |
| Hardwired AC power | Yes, 120 V AC | Yes, 120 V AC | Yes, 120 V AC |
| Backup battery | Sealed 10-year backup for alarm functions | Sealed 10-year backup for smoke-alarm function | Replaceable battery backup |
| Primary page intent | Smoke + CO + visual notification | Smoke + visual notification | Legacy model and replacement compatibility |
Browse the complete MarsLED smoke alarm collection, smoke and carbon-monoxide alarms, smoke, CO and strobe alarms, or visual strobe alarm options.
Customers searching for P1275CA are commonly replacing an existing alarm rather than planning a new alarm system. Replacement selection must consider the complete interconnected network, not only the physical appearance of the old alarm.
Current Kidde hardwired smoke alarms such as 20SAR-CA may be replacement options to evaluate, subject to full compatibility and project review.
A newer alarm may require an approved Kidde wiring adaptor or new mounting plate. Never force or modify a connector simply to make a replacement fit.
Confirm voltage, wiring connector, mounting plate, sensing functions and compatibility with every interconnected alarm before ordering.
MarsLED supplies Kidde smoke, carbon-monoxide and visual-strobe alarms to homeowners, landlords, electricians, builders, property managers and contractors across New Brunswick, with Canada-wide shipping available.
The code, safety, tenancy and product statements on this page are linked to primary New Brunswick government, legislation and manufacturer sources. Confirm that each source relevant to your project remains current before relying on it.
Page reviewed against the cited public sources as of July 18, 2026. MarsLED does not warrant or guarantee that this page is complete, error-free, current after that date, suitable for a particular property or project, or accepted by any authority having jurisdiction. Codes, regulations, standards, municipal requirements, permit conditions, inspection orders, official interpretations, certifications, product specifications, compatibility and availability may change without notice.
MarsLED is not acting as a lawyer, engineer, architect, fire-protection consultant, electrician, building official, fire official, inspector, permit issuer or authority having jurisdiction. The customer, owner, landlord, designer, contractor, installer and all other project participants remain solely responsible for confirming current legal and code requirements, selecting suitable products, obtaining permits and approvals, engaging qualified professionals, and ensuring correct installation, commissioning, testing, maintenance and replacement.
No statement, comparison, example, external link or product recommendation on this page is a warranty, certification, approval or guarantee that a product or installation will pass inspection or comply with every requirement applicable to a particular building, tenancy, occupancy or project. External links are provided for convenience only, and MarsLED does not control or guarantee the accuracy, availability or continuing validity of external content.
To the maximum extent permitted by applicable law, MarsLED and its directors, officers, employees, contractors and agents disclaim responsibility for loss, damage, injury, cost, claim, delay, failed inspection, rejected permit, tenancy dispute, deficiency, incompatibility, installation expense or non-compliance arising from reliance on this page or from the selection, purchase, specification, installation, modification, replacement, testing, maintenance or use of any product referenced on it.
Nothing on this page limits any right, remedy, duty or liability that cannot lawfully be excluded or limited under applicable consumer-protection, residential-tenancies, product-liability or other legislation.
Share the existing alarm model, building type, project scope, required sensing functions and whether visual notification is specified. MarsLED can help identify product options, while final code and installation approval remains with the applicable authority and project professionals.