First Alert SMI105-AC Interconnected Smoke Alarm – 3-Pack with 10-Year Battery Backup

Overview

The First Alert SMI105-AC Interconnect Hardwire Smoke Alarm is designed to help you detect potential smoke sooner while staying protected during power outages. With Precision Detection technology and a 10-year battery backup, this 3-pack setup supports consistent safety across your home and reduces common nuisance alarms.

Interconnect capability means one alarm can trigger all compatible units, creating a coordinated alert that spans multiple rooms. An intuitive alarm indicator clearly shows which unit initiated the alert, while an end-of-life warning helps you plan for a timely replacement. This combination of features emphasizes practical, reliable protection without relying on fear or speculation.

Key features at a glance

• Precision Detection advanced sensing technology tailored to reduce cooking nuisance alarms while delivering early warning.
• 10-Year battery backup keeps warning signals active during power outages, so you stay protected.
• Interconnect capability means alarms across the network sound together for a coordinated response.
• Visual alarm indicator identifies the initiating unit, helping you locate the source quickly.
• End-of-life warning prompts timely replacement to maintain ongoing protection.

Real-life scenarios

Imagine evenings when steam or light cooking smoke triggers alarms. Precision Detection aims to minimize these disruptions while staying alert to real danger in the kitchen area. During a storm, the 10-year backup keeps the system active even if power fluctuates, so you don’t miss a cue. In homes with multiple rooms, the interconnect feature provides a unified alert if smoke is detected anywhere in the chain.

Setup, maintenance, and practical tips

Designed for hardwired installation with a long-lasting battery reserve, this model supports straightforward setup across multiple levels. Regular testing and timely replacement when indicated by the end-of-life warning help maintain reliable protection over time.

• Install on every level and outside sleeping areas for broad coverage.
• Test the alarms monthly to confirm interconnection and sound accuracy.
• Pay attention to the end-of-life indicator to plan replacements proactively.

Why choose First Alert

First Alert emphasizes clear audible alerts, dependable interconnection, and durable, battery-assisted protection for households seeking practical safety upgrades. The SMI105-AC is designed for consistent performance without overpromising results, focusing on real-world use and easy maintenance.