First Alert 9120B hardwired smoke alarm with battery backup for continuous protection during outages.

First Alert

First Alert 9120B 120V Hardwired Smoke Alarm with Battery Backup – 5-Pack

High-performance tools and home improvement made for confident daily results

$119.77

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Why customers choose TaskHolt Tools

Reliable protection for modern homes

Protect your home with dependable, easy to maintain smoke detection from First Alert. The 9120B 120V hardwired smoke alarm with battery backup is designed for continuous protection across multiple rooms, available here as a convenient 5 pack.

Key benefits include a reliable 120V power supply with a built in 9-volt backup battery, ensuring operation during power outages. It uses an ionization sensor to respond quickly to fast flaming fires, delivering a loud 85 decibel alert that can wake a sleeping household.

Key features

  • 120V AC power with 9-volt battery backup
  • Ionization smoke sensor for fast detection
  • 85 dB alarm to notify occupants
  • Tamper resistant locking pins
  • Single button silence and test

Whole home coverage and value

This 5 pack is ideal for multiple rooms such as bedrooms, hallways, and living areas. Having alarms in several zones helps create a broader alert network, so you may notice smoke sooner in at least one area.

  • Five alarms in one pack for coordinated protection
  • Designed for easy mounting in standard ceilings
  • Battery backup ensures alerting during outages
  • Low-maintenance with easy testing and replacement

Installation and maintenance tips

During installation, verify correct wiring polarity and secure all wire nut connections to promote reliable operation. If unsure about wiring, consult a professional. After installation, regularly test the alarm and replace the backup battery as needed.

Note that proper setup and consistent testing may improve early alerting, but results depend on home layout and conditions.

FAQ

Q: What is included in the First Alert 9120B 5-pack?

A: A set of five 9120B 120V hardwired smoke alarms with battery backup for multi-room coverage.

Q: How do I test and maintain the 9120B smoke alarm?

A: Use the single button test to confirm operation; replace the backup battery as needed and verify wiring during installation.

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