First Alert SMI105-AC Interconnect Hardwired Smoke Alarm with 10-Year Battery Backup – 1 Pack

Protect your home with precision and peace of mind using the First Alert SMI105-AC Interconnect Hardwire Smoke Alarm. Built to meet evolving safety standards, this model blends reliable detection with practical features designed for real-world use.

Smart detection for everyday safety

First Alert's Precision Detection advanced sensing technology aims to reduce cooking nuisance alarms while delivering early warning in the event of a fire emergency. The sensor carefully distinguishes cooking events from true smoke, helping you focus on real danger.

• Complies with new industry standards for faster, more accurate alerts.
• Early warning helps you react sooner without excessive false alarms.

Uninterrupted protection, even when the power goes out

The unit includes a 10-year battery backup that keeps the alarm responsive during power outages, so protection endures beyond a routine outage scenario.

• 10-year battery backup provides continuous coverage
• Rely on audible alerts and interconnectivity when the main power is unavailable

Interconnect reliability across your home

With interconnect capability, when one alarm sounds, all compatible First Alert alarms in the system will sound. This connected approach offers a broader safety net and helps ensure everyone in the home is alerted.

• Clear networked warning across multiple rooms or levels
• Identifies the initiator with a dedicated alarm indicator

Maintenance-friendly design

An end-of-life warning helps you time replacement so you stay protected. The visual indicator displays which unit triggered the alarm, simplifying servicing and testing.

• End-of-life indicator signals when to replace the unit
• Alarm indicator visually identifies the source of the alert

Designed for simple installation and dependable performance, the First Alert SMI105-AC is a practical choice for households seeking enhanced early warning without sacrificing everyday usability. Consider how interconnectable alarms and a long-lasting battery backup can fit into your existing safety plan and routine checks.