First Alert SMI100-AC Hardwire Interconnect Smoke Alarm

Hardwired interconnect means that all the smoke alarms in your home are physically linked through your electrical wiring. If one alarm detects smoke and triggers, every other alarm in the system will sound simultaneously, ensuring everyone in the house is alerted regardless of where the fire starts.

Yes. While they are primarily powered by your home's electrical system, each unit includes a battery backup. This ensures the alarms remain fully operational and continue to protect your home even during a power outage.

If you are comfortable working with basic home electrical wiring, you can likely install these yourself. However, because they require a hardwired connection, you should be confident in your ability to safely handle electrical fixtures; if you are unsure, hiring a licensed electrician is the safest route.

This 12-pack is designed for larger homes or multi-level properties that require comprehensive coverage. Local building codes often dictate the number and placement of smoke alarms, and buying in bulk ensures you have enough units to meet safety standards for every bedroom, hallway, and living area.

These units are versatile and can be mounted on either the ceiling or the wall. For optimal performance, always follow the specific placement guidelines in the user manual, as smoke rises and ceiling mounting is generally preferred for the fastest detection.