Looking for the best hardwired smoke detector with battery backup?
We offer top-rated models that ensure uninterrupted protection, loud alarms, and reliable battery backup for your home’s safety.
Hardwired smoke detectors with battery backup are a smart choice for uninterrupted safety. They run on home power but switch to battery backup during outages. No gaps in protection mean your family stays safe, day or night.
These detectors boast loud 85-decibel alarms, easy installation, and interconnected systems. A side-load battery compartment makes replacements quick. With 10-year warranties and tamper-resistant designs, they’re built to last.
Homeowners love the peace of mind these detectors provide. Trusted brands like First Alert and Kidde deliver fast, reliable alerts. Ready to pick the best one for your space? Let’s dive into the top picks that combine power, performance, and proven safety.
List of Top 10 Hardwired Smoke Detector With Battery Backup
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First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack |
This product is perfect for homeowners and contractors needing reliable smoke detection. The 6-pack offers easy installation in multiple rooms, with battery backup for safety during power outages. Its tamper-resistant design and loud 85Db alarm ensure security and clear alerts. |
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First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack |
This smoke alarm is perfect for homeowners who want reliable fire safety with fewer false alarms from cooking. Interconnected alarms alert everyone in the home, while battery backup keeps it running during power cuts. |
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BRK First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack |
This smoke alarm is ideal for homeowners seeking reliable fire safety. Precision Detection reduces false alarms from cooking, and interconnected alerts warn everyone in the home quickly. Battery backup ensures protection during power issues, and easy installation means no rewiring. |
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BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack |
This smoke detector is perfect for homeowners wanting reliable fire safety with battery backup during power outages. Its ionization sensor quickly catches fast-flaming fires, and easy installation suits families needing simple, trusted protection. |
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First Alert 9120B / SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, 3-Pack |
This smoke detector is perfect for homeowners who want reliable fire safety with battery backup during power outages. Its ionization sensor quickly detects fast-flaming fires, and the 85 dB alarm ensures loud alerts. Great for families needing easy installation and whole-home coverage with linked alarms. |
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First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup, Contractor 6-Pack |
This product is perfect for homeowners and contractors seeking reliable fire safety. It offers ionization sensors, battery backup, and easy installation for quick, trusted protection. |
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Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches |
This smoke detector is perfect for homeowners, property managers, and contractors seeking reliable, code-compliant safety. Its hardwired design with 10-year battery backup ensures peace of mind, while interconnect capability and reduced false alarms make it ideal for busy households or multi-unit buildings. |
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Siterlink Hardwired Interconnected Smoke Detectors,Photoelectric Smoke Alarm with 9V Battery Backup,Test/Silence Button,Hard Wired Fire Alarm for Home,UL Listed Smoke Detector GS562A 12-Pack |
This product is perfect for homes needing reliable fire safety. Its hardwired design with battery backup ensures protection during power outages, while the interconnected system alerts everyone quickly. |
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First Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup, 1-Pack |
This smoke alarm is perfect for homeowners who want reliable fire safety with minimal false alerts. Its 10-year battery backup ensures protection during power outages, while precision detection reduces nuisance alarms from cooking. Interconnectivity lets all alarms sound together for faster warnings, and the alarm indicator shows exactly where danger is. It’s ideal for families seeking clear, low-maintenance safety solutions. |
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First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack |
This product is perfect for homeowners seeking reliable smoke and carbon monoxide protection. The battery backup ensures operation during power outages, and it can connect with other detectors for full home coverage. Indicator lights show the alert type, while the single test button and side-load battery simplify maintenance. |
Detailed Reviews
Choosing the right hardwired smoke detector with battery backup is key for home safety. Our expert picks highlight top models tested for reliability, quick setup, and 24/7 protection even during power outages. Each option is ranked to help you find the best fit—whether you want smart alerts, easy battery access, or seamless interconnectivity—so you can act fast when it matters.
1. First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack
First Alert BRK SMI100-AC smoke detectors are hardwired with a 9-volt battery backup to keep working during power outages. They have tamper-resistant locking pins and a loud 85Db alarm for safety.
These detectors are easy to install, use 120-Volt AC power, and connect to up to 18 units. They have a side-load battery compartment for quick replacements and a 10-Year limited warranty. Trusted for fast setup and reliability.
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Perfect For:
This product is perfect for homeowners and contractors needing reliable smoke detection. The 6-pack offers easy installation in multiple rooms, with battery backup for safety during power outages. Its tamper-resistant design and loud 85Db alarm ensure security and clear alerts.
Ready to Purchase?
2. First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack
The First Alert SMI100-AC smoke alarm uses Precision Detection technology to cut down false alarms from cooking. It interconnects with compatible alarms, so all sound if one detects danger.
Battery backup keeps it running during power cuts. An alarm indicator shows which unit triggered first. The Quick Connect Plug makes setup easy, no rewiring needed.
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Perfect For:
This smoke alarm is perfect for homeowners who want reliable fire safety with fewer false alarms from cooking. Interconnected alarms alert everyone in the home, while battery backup keeps it running during power cuts.
Ready to Purchase?
3. BRK First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack
The BRK First Alert Smoke Alarm uses advanced sensing tech to cut false alarms and spot fires early. Its 3-pack gives full home coverage with hardwired and battery backup power.
Interconnected alarms all sound when one detects danger. Battery backup keeps working during blackouts. Alarm indicator shows which unit found the threat.
The Quick Connect Plug makes setup easy without rewiring. Meets strict safety rules to keep your home secure.
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Perfect For:
This smoke alarm is ideal for homeowners seeking reliable fire safety. Precision Detection reduces false alarms from cooking, and interconnected alerts warn everyone in the home quickly. Battery backup ensures protection during power issues, and easy installation means no rewiring.
Ready to Purchase?
4. BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
This hardwired smoke alarm has a battery backup for power outages. It uses an ionization sensor to catch fast-flaming fires. An 85 decibel alarm warns you fast if smoke is found.
You can connect to other detectors so all alarms sound at once. A simple test/silence button and easy battery access make upkeep a snap.
UL-tested safety meets 120V AC power with 9V battery backup. Trusted for decades, it’s easy to install and built for job site speed.
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Perfect For:
This smoke detector is perfect for homeowners wanting reliable fire safety with battery backup during power outages. Its ionization sensor quickly catches fast-flaming fires, and easy installation suits families needing simple, trusted protection.
Ready to Purchase?
5. First Alert 9120B / SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, 3-Pack
This 3-pack of hardwired smoke detectors includes battery backup for constant protection during power outages. Each alarm uses an ionization sensor to catch smoke from fast-flaming fires and sounds an 85-decibel alert.
Place one on every home level and in bedrooms for full safety. Alarms can link to other compatible BRK or First Alert detectors. A single test/silence button and side-load battery design make them simple to use.
Tamper-resistant brackets and universal mounts ease installation. They meet UL safety standards and are trusted for fast, reliable setup. First Alert has led home safety since 1958, with alarms built for quality and ease.
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Perfect For:
This smoke detector is perfect for homeowners who want reliable fire safety with battery backup during power outages. Its ionization sensor quickly detects fast-flaming fires, and the 85 dB alarm ensures loud alerts. Great for families needing easy installation and whole-home coverage with linked alarms.
Ready to Purchase?
6. First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup, Contractor 6-Pack
The First Alert BRK SMI100-AC is a hardwired smoke alarm with a battery backup. It uses an ionization sensor to catch fast-flaming fires and sounds an 85 decibel alarm.
This alarm connects to other BRK or First Alert detectors. Install one on every home level and in each bedroom. A single test/silence button and side-load battery compartment make it easy to use.
The alarms meet UL safety standards and have a T3 alert pattern. The easy-access battery drawer lets you replace batteries fast. First Alert has led home safety since 1958.
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Perfect For:
This product is perfect for homeowners and contractors seeking reliable fire safety. It offers ionization sensors, battery backup, and easy installation for quick, trusted protection.
Ready to Purchase?
7. Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches
The Kidde Smoke Detector is a hardwired unit with a 10-year battery backup. It uses advanced sensing tech to detect smoke 25% faster and sounds an 85-decibel alarm with a red LED light.
This alarm reduces false triggers from cooking or steam while staying alert to real danger. It meets strict UL and FCC safety standards for reliable, code-compliant home use.
Interconnect with other Kidde alarms to alert the whole home. Built for homeowners and pros, it offers long-term safety. 10-year warranty and saves $40 on battery replacements.
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Perfect For:
This smoke detector is perfect for homeowners, property managers, and contractors seeking reliable, code-compliant safety. Its hardwired design with 10-year battery backup ensures peace of mind, while interconnect capability and reduced false alarms make it ideal for busy households or multi-unit buildings.
Ready to Purchase?
8. Siterlink Hardwired Interconnected Smoke Detectors,Photoelectric Smoke Alarm with 9V Battery Backup,Test/Silence Button,Hard Wired Fire Alarm for Home,UL Listed Smoke Detector GS562A 12-Pack
Siterlink Hardwired Smoke Detectors offer uninterrupted protection with 120V AC power and a 9V battery backup. These alarms stay active during outages, ensuring safety even in emergencies.
They use advanced photoelectric sensors to cut down on false alarms from cooking or steam. A one-touch silence button mutes alerts for 10 hours, so sleep stays undisturbed.
Interconnected system links up to 12 alarms for faster alerts. Built-in LED indicators glow softly without causing light pollution. UL Listed for trusted, reliable performance.
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Perfect For:
This product is perfect for homes needing reliable fire safety. Its hardwired design with battery backup ensures protection during power outages, while the interconnected system alerts everyone quickly.
Ready to Purchase?
9. First Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup, 1-Pack
The First Alert SMI105-AC smoke alarm uses Precision Detection technology to cut down false alarms from cooking. It has a 10-Year battery backup to keep working during power cuts. Interconnect capability lets it link with other alarms so all sound when one is triggered.
The alarm indicator shows which unit found the danger first. An end-of-life warning tells you when to replace the alarm. It’s made for easy installation and long-term safety.
This alarm boosts home safety with smart tech and reliable power. It’s a simple, trustworthy choice for early fire warnings.
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Perfect For:
This smoke alarm is perfect for homeowners who want reliable fire safety with minimal false alerts. Its 10-year battery backup ensures protection during power outages, while precision detection reduces nuisance alarms from cooking. Interconnectivity lets all alarms sound together for faster warnings, and the alarm indicator shows exactly where danger is. It’s ideal for families seeking clear, low-maintenance safety solutions.
Ready to Purchase?
10. First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack
The First Alert SC-9120B is a hardwired smoke and carbon monoxide alarm with battery backup. It keeps working during power outages for constant safety. This 2-pack lets you cover key areas like bedrooms and hallways.
It can connect to other compatible alarms for whole-home alerts. Indicator lights show if the alarm is for smoke or CO. This helps you act fast in emergencies.
A single test silence button makes checks easy. The side-load battery compartment lets you swap batteries fast. Simple, reliable protection for your home.
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Perfect For:
This product is perfect for homeowners seeking reliable smoke and carbon monoxide protection. The battery backup ensures operation during power outages, and it can connect with other detectors for full home coverage. Indicator lights show the alert type, while the single test button and side-load battery simplify maintenance.
Ready to Purchase?
Buying Guide
Hardwired smoke detectors with battery backup offer uninterrupted safety. They run on home power but switch to battery backup during outages.
- Battery Backup: Ensures alarms work during power cuts. Look for 9V or 10-year batteries for long-term reliability.
- Interconnected Systems: Alarms link together so all sound when one detects smoke. Ideal for large homes or multi-level spaces.
- Alarm Loudness: Choose 85-decibel alarms to ensure warnings are heard clearly, even from a distance.
- Easy Installation: Features like Quick Connect Plugs or side-load battery compartments simplify setup and maintenance.
- Tamper-Resistant Design: Prevents accidental disconnections or battery theft. Key for households with kids or pets.
- Sensor Type: Ionization sensors detect fast-flaming fires, while photoelectric sensors spot smoldering fires faster. Decide based on fire risks.
- Warranty & Lifespan: Opt for 10-year warranties and end-of-life warnings to plan replacements without guesswork.
- Safety Certifications: Check for UL Listed or FCC-certified models to meet local safety codes and standards.
- False Alarm Reduction: Features like Precision Detection or LED status lights cut down nuisance alarms from cooking or steam.
- Coverage Area: Buy multi-packs or interconnectable units to cover every level of your home, including bedrooms and hallways.