Looking for the best hardwired smoke alarm with battery backup? We’ve tested and reviewed the top 10 options to help you find the perfect one for your home.
Hardwired smoke alarms with battery backup are a must-have for home safety. They keep you protected even during power outages. These alarms are reliable and easy to install.
With advanced sensing technology, they reduce false alarms. They also interconnect, so all alarms sound together in an emergency. This ensures full home coverage and early warnings.
We’ve tested and reviewed the best options for you. Discover the perfect alarm to keep your family safe. Let’s find the right one for your home!
List of Top 10 Hardwired Smoke Alarm With Battery Backup
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First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack |
This 6-pack of hardwired smoke detectors is perfect for homeowners who want reliable safety and easy installation. With battery backup, tamper-resistant pins, and a loud alarm, it’s ideal for families or busy job sites. |
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First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack |
The First Alert SMI100-AC is perfect for homeowners who want reliable fire protection. It’s easy to install and works even during power outages, keeping your home safe and sound. |
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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 who want reliable protection for their family and home. It’s easy to install and works even during power outages, making it ideal for anyone looking for peace of mind. |
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BRK First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack |
This smoke alarm is perfect for homeowners who want reliable fire protection. It’s easy to install and works even during power outages, making it ideal for families seeking peace of mind. |
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First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup, Contractor 6-Pack |
This 6-pack of hardwired smoke alarms is perfect for contractors and homeowners who want reliable fire protection. With easy installation and battery backup, it’s ideal for keeping families safe and meeting safety standards. |
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First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack |
This 6-pack of First Alert smoke alarms is perfect for homeowners who want reliable fire protection. It’s easy to install and works together, so if one alarm sounds, they all sound. Battery backup keeps you safe during power outages. |
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Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 1 Pack |
This Kidde Smoke Detector is perfect for homeowners and professionals who want reliable, long-term safety. It’s ideal for families and property managers looking for fast, accurate smoke detection with fewer false alarms. |
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First Alert Smoke Alarm, Interconnect Hardwire Detector with 10-Year Battery Backup, SMI105-AC, 6-Pack |
This 6-pack of First Alert smoke alarms is perfect for homeowners who want reliable fire protection. With advanced sensing technology, 10-year battery backup, and interconnect capability, it’s ideal for families seeking peace of mind. |
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First Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup, 1-Pack |
The First Alert SMI105-AC is perfect for homeowners who want reliable fire protection. It’s ideal for kitchens and busy areas where false alarms can be a hassle. |
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FIRST ALERT BRK SC9120FF Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 pack , White |
This smoke and carbon monoxide detector is perfect for homeowners who want reliable safety. It’s easy to install and works even during power outages, keeping your family protected 24/7. |
Detailed Reviews
Discover the top 10 hardwired smoke alarms with battery backup, carefully selected based on expert reviews and customer feedback. Each product is evaluated for reliability, performance, and value, ensuring you find the perfect fit for your home. Whether you prioritize safety, ease of installation, or affordability, this guide has you covered. Read on to make an informed choice and keep your home protected with the best hardwired smoke alarm with battery backup.
1. First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup, 6-Pack

The First Alert BRK SMI100-AC is a 6-pack of hardwired smoke detectors. Each unit includes a 9-volt battery backup for power outages. These alarms are easy to install and reliable.
They feature tamper-resistant locking pins and a loud 85Db alarm. The single button lets you test or silence the alarm quickly.
With a 10-year limited warranty, these alarms are trusted for home safety. They interconnect up to 18 units and have a side-load battery compartment for fast replacement. Keep your home safe with these dependable smoke detectors.
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Perfect For:
This 6-pack of hardwired smoke detectors is perfect for homeowners who want reliable safety and easy installation. With battery backup, tamper-resistant pins, and a loud alarm, it’s ideal for families or busy job sites.
Ready to Purchase?
2. First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack

The First Alert SMI100-AC is a hardwire smoke alarm with battery backup. It uses Precision Detection to reduce false alarms. This keeps your home safe without unnecessary alerts.
When one alarm sounds, all connected alarms will sound too. This early warning system ensures everyone knows about danger fast.
The Quick Connect Plug makes installation easy. No rewiring needed! The battery backup keeps you protected even during power outages.
| Pros | Cons |
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Perfect For:
The First Alert SMI100-AC is perfect for homeowners who want reliable fire protection. It’s easy to install and works even during power outages, keeping your home safe and sound.
Ready to Purchase?
3. BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack

The BRK First Alert 9120BFF/SMI100-AC Smoke Detector keeps your family safe. It’s hardwired with a battery backup for constant monitoring, even during power outages.
It has an ionization sensor to detect fast flaming fires. The 85-decibel alarm alerts you quickly.
Easy to install and connect to other alarms. Trusted since 1958, it’s rigorously tested to meet UL standards.
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Perfect For:
This smoke detector is perfect for homeowners who want reliable protection for their family and home. It’s easy to install and works even during power outages, making it ideal for anyone looking for peace of mind.
Ready to Purchase?
4. BRK First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack

The BRK First Alert Smoke Alarm keeps your home safe with advanced sensing technology. It reduces false alarms from cooking while giving early warnings in emergencies.
With interconnect capability, all alarms sound together when one detects smoke. The battery backup ensures protection even during power outages.
Easy installation with the Quick Connect Plug. No rewiring needed. Alarm indicator shows which unit triggered the alert.
| Pros | Cons |
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Perfect For:
This smoke alarm is perfect for homeowners who want reliable fire protection. It’s easy to install and works even during power outages, making it ideal for families seeking peace of mind.
Ready to Purchase?
5. First Alert BRK SMI100-AC Hardwired Smoke Alarm with Battery Backup, Contractor 6-Pack

Protect your home with the First Alert BRK SMI100-AC Hardwired Smoke Alarm. This 6-pack ensures complete coverage for your family’s safety.
Ionization sensor detects fast flaming fires, alerting you with an 85-decibel alarm. Battery backup provides constant monitoring, even during power outages. Easy installation with universal mounting brackets and tamper-resistant locking.
Connect multiple alarms for whole-home protection. Simple to use with a single test/silence button. Trusted brand in home safety since 1958, ensuring peace of mind.
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Perfect For:
This 6-pack of hardwired smoke alarms is perfect for contractors and homeowners who want reliable fire protection. With easy installation and battery backup, it’s ideal for keeping families safe and meeting safety standards.
Ready to Purchase?
6. First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack

The First Alert SMI100-AC is a 6-pack of hardwired smoke alarms with battery backup. It uses Precision Detection to reduce false alarms from cooking. This advanced technology ensures early warning in case of a fire.
When one alarm sounds, all connected alarms sound, too. This interconnect feature keeps your whole home safe. The battery backup keeps you protected during power outages.
Installation is easy with the Quick Connect Plug. No rewiring needed! The alarm indicator shows which unit triggered the alert, making it simple to locate.
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Perfect For:
This 6-pack of First Alert smoke alarms is perfect for homeowners who want reliable fire protection. It’s easy to install and works together, so if one alarm sounds, they all sound. Battery backup keeps you safe during power outages.
Ready to Purchase?
7. Kidde Smoke Detector, Hardwired with 10-Year Battery Backup, Interconnectable, LED Status Lights, 85 dB Alarm, 5-inches, 20SA10, 1 Pack

The Kidde Smoke Detector keeps your home safe with advanced sensing technology. It detects smoke 25% faster and sounds a loud 85 dB alarm with a red LED light.
It’s hardwired with a 10-year battery backup, saving you money on replacements. The enhanced sensing technology reduces false alarms from cooking or steam. It’s tested for safety and meets UL 217 and FCC standards.
The interconnect feature links with other Kidde alarms for full home coverage. It’s built for homeowners and professionals, offering dependable, code-compliant detection. A 10-year warranty ensures long-term peace of mind.
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Perfect For:
This Kidde Smoke Detector is perfect for homeowners and professionals who want reliable, long-term safety. It’s ideal for families and property managers looking for fast, accurate smoke detection with fewer false alarms.
Ready to Purchase?
8. First Alert Smoke Alarm, Interconnect Hardwire Detector with 10-Year Battery Backup, SMI105-AC, 6-Pack

The First Alert Smoke Alarm keeps your home safe with advanced sensing technology. It reduces false alarms from cooking while giving early warnings in emergencies.
This 6-pack includes alarms with a 10-year battery backup. They work together, so if one sounds, all alarms sound, ensuring full protection.
Easy to use, reliable, and long-lasting. Perfect for peace of mind in your home.
| Pros | Cons |
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Perfect For:
This 6-pack of First Alert smoke alarms is perfect for homeowners who want reliable fire protection. With advanced sensing technology, 10-year battery backup, and interconnect capability, it’s ideal for families seeking peace of mind.
Ready to Purchase?
9. First Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup, 1-Pack

The First Alert SMI105-AC is a hardwired smoke alarm with a 10-year battery backup. It uses Precision Detection to reduce false alarms from cooking. This advanced technology gives early warning in case of a fire.
When one alarm sounds, all connected alarms will sound too. This interconnect feature ensures full home coverage. The alarm indicator shows which unit started the alert.
An end-of-life warning tells you when to replace the alarm. This reliable device offers continuous protection, even during power outages.
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Perfect For:
The First Alert SMI105-AC is perfect for homeowners who want reliable fire protection. It’s ideal for kitchens and busy areas where false alarms can be a hassle.
Ready to Purchase?
10. FIRST ALERT BRK SC9120FF Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 pack , White

Protect your family with the FIRST ALERT BRK SC9120FF. This hardwired smoke and carbon monoxide detector keeps you safe.
It has battery backup, so it works even during power outages. The alarm uses advanced sensors for smoke and carbon monoxide. It also has bright indicator lights and a loud siren.
Installation is quick and easy. It connects to other compatible alarms. First Alert is a trusted brand in home safety.
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Perfect For:
This smoke and carbon monoxide detector is perfect for homeowners who want reliable safety. It’s easy to install and works even during power outages, keeping your family protected 24/7.
Ready to Purchase?
Buying Guide
Hardwired smoke alarms with battery backup are a must-have for home safety. They keep you protected even during power outages. These alarms are reliable and easy to install.
Choosing the right one can feel overwhelming, but we’re here to help. We’ve tested and reviewed the best options to keep your family safe. Let’s find the perfect alarm for your home!
Here’s what to consider when buying:
- Power Source: Hardwired alarms connect to your home’s electricity, while the battery backup ensures they work during outages.
- Sensing Technology: Look for alarms with advanced sensors to reduce false alarms and detect fires quickly.
- Interconnect Feature: Alarms that interconnect sound together, giving you full home coverage and early warnings.
- Installation: Choose alarms with easy installation features like Quick Connect Plugs or universal mounting brackets.
- Alarm Volume: A loud 85 dB alarm ensures you hear it from anywhere in your home.
- Battery Life: Opt for alarms with long-lasting batteries or 10-year battery backups to save on replacements.
- Warranty: A 10-year warranty gives you peace of mind and shows the product’s reliability.
- Additional Features: Look for extras like tamper-resistant locks, alarm indicators, or end-of-life warnings.
With these factors in mind, you’ll find the perfect hardwired smoke alarm with battery backup to keep your home safe.