First Alert Hardwired Smoke Alarm 6 Pack Battery Backup

Description

Product Overview

The First Alert 9120B hardwired smoke alarm 6 pack delivers advanced fire detection using ionization sensor technology, ensuring rapid response to fast-flaming fires. Constructed in a durable white housing measuring 2.2″D x 5.6″W x 5.6″H, each unit operates on 120-Volt AC power with included 9V alkaline battery backup. The package contains six complete alarms, mounting brackets with hardware, and batteries, providing immediate setup for multi-room protection. With an audible 85dB alarm and operating humidity range of 10-95% RH, these alarms maintain reliability in various environmental conditions.

Usage

These hardwired smoke alarms are designed for residential homes, apartments, and commercial job sites where consistent fire protection is essential. Install them in hallways, bedrooms, and common areas to meet building code requirements and ensure early warning during emergencies. The interconnect capability allows linking up to 18 units (12 smoke alarms plus 6 carbon monoxide/heat/relay devices), making them suitable for large properties. Homeowners, contractors, and property managers benefit from the tamper-resistant locking pins that prevent unauthorized removal, while the single-button silence/test function simplifies routine maintenance.

Why Choose Us

First Alert has established itself as a leader in home safety with over 40 years of innovation, and the 9120B model reflects this commitment through rigorous testing and quality materials. The hardwired design with battery backup ensures uninterrupted operation during power outages, a critical feature that battery-only models lack. The open mounting framework and side-load battery compartment streamline installation and maintenance, reducing time and effort for professionals and DIY users. Backed by a 10-year limited warranty and positive customer reviews averaging 4.7 stars, these alarms offer trusted performance and long-term value.

Key Features

• Hardwired 120V AC power with 9V battery backup for continuous protection during power failures
• Interconnect capability for up to 18 units to create a whole-home safety system
• Tamper-resistant locking pins to secure the alarm and prevent removal
• Single-button silence/test function for easy operation and maintenance checks
• Loud 85dB alarm with ionization sensor for fast detection of flaming fires

FAQ

How many units can be interconnected?

You can interconnect up to 18 First Alert 9120B alarms, which may include combinations of smoke, carbon monoxide, heat, or relay devices as specified in the product guidelines.

Does the alarm work during a power outage?

Yes, the included 9V battery backup automatically activates when AC power is lost, ensuring the smoke alarm remains operational.

What type of sensor does this smoke alarm use?

This model uses ionization sensor technology, which is highly responsive to fast-burning, flaming fires.

Are the batteries included with the 6-pack?

Yes, each alarm comes with a 9V alkaline battery pre-installed, so they are ready for immediate use after installation.

Is professional installation required?

While hardwired installation should be performed by a qualified electrician to ensure safety and compliance, the mounting process is straightforward for those with electrical experience.