First Alert SMI100-AC Hardwire Interconnect Smoke Alarm with Battery Backup (6-Pack)

Smart smoke protection for the home

The First Alert SMI100-AC is a hardwire interconnect smoke alarm with battery backup designed for reliable, ongoing protection in today’s homes. Built around Precision Detection, this model aligns with evolving safety standards and aims to distinguish between common cooking nuisances and real danger. Replacing existing alarms is straightforward, and when paired with compatible units, it helps create a coordinated, whole‑home warning network that can provide an early alert across multiple rooms.

Key benefits at a glance

• Precision Detection advanced sensing helps reduce cooking nuisance alarms while delivering early warning.
• Interconnect capability ensures that when one alarm sounds, compatible alarms throughout the home sound as well.
• Battery backup maintains protection during power outages so you’re covered when the power goes out.
• Visual alarm indicator quickly identifies the initiating unit for faster response.
• Quick Connect Plug included enables easy installation with no rewiring needed.

Easy setup and whole‑home safety

This model is designed for simple installation, often replacing existing alarms without any rewiring. Interconnect capability lets you build a network of compatible First Alert devices, providing a coordinated alert across hallways, bedrooms, and living areas. The included Quick Connect Plug speeds setup and minimizes wiring tasks, so you can upgrade your home’s smoke detection with less hassle.

Practical use and routine maintenance

With a 6‑pack, you have flexibility to cover multiple key zones such as entryways, sleeping areas, and high‑traffic living spaces. For ongoing reliability, perform regular tests, monitor battery health, and follow placement guidelines to maximize coverage and detection effectiveness.

What’s in the box (general guidance)

Includes reliable components designed to simplify upgrading or expanding a monitored network. Quick Connect Plug support and mounting hardware help streamline installation and set‑up across rooms as you expand coverage.