First Alert 9120BFF Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack

• Keep your family safe with this hardwired smoke alarm the battery backup means constant monitoring, even if there's a power failure
• Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast flaming fires and alerts you with an 85 decibel alarm
• To ensure complete protection make sure to place one on each level of your home and in each bedroom
• Can connect to other compatible BRK or first alert smoke detectors, to ensure all alarms will sound when smoke is detected
• Simple to use, with a single test/silence button, and side load battery compartment tamper resistant locking brackets and universal mounting brackets make installation easy
• Rigorously tested to meet UL standards120 volt AC power with 9V battery backup to keep alarm functioning during power outage
• First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
• Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.

• Question : What type of fires can this smoke alarm detect?
  Answer : This smoke alarm can detect smoke from hot, fast flaming fires.
• Question : How many alarms can this smoke detector integrate with?
  Answer : This smoke detector can integrate with up to 12 other First Alert or BRK hardwired alarms.
• Question : What is included in the package?
  Answer : One smoke alarm, one 9-volt battery, and user's manual.
• Question : How do you silence this alarm?
  Answer : Follow the steps outlined below: 1. Put all weapons in your house under lock and key. 2. Give the key to someone you can trust and that you are not capable of overpowering. 3. Find the smoke detector that is beeping. 4. Ice your foot because by now you have kicked several walls, doors, and furniture. 5. Take the guilty smoke detector(s) into the garage and smash them into as many pieces as possible. 6. Burn the smashed bits and pieces in the back yard fire pit until it burns out on its own.
• Question : Can a BRK Model 92120B smoke detector directly plug in and replace an old BRK Model 4120B smoke detector (without an adapter)?
  Answer : Yes.
• Question : Can these be connected together so if one is set off they all go off?
  Answer : Yes, the BRK smoke detectors can be connected together by wire so when one goes off they all do.
• Question : My entire home is equipped with BRK smoke detectors (4120 B) and Carbon Monoxide Detectors (CO50120B). They need replacing. Will new BRK fit extant casings?
  Answer : The mount screws will fit, but the base plate itself is slightly smaller so you might have to touch up paint. The connectors will fit as well so no need to change them.
• Question : Does the 9120B replace the 4120B?
  Answer : Yes.
• Question : Does it come with the electrical pigtails?
  Answer : Yes, it comes with the pigtails and a battery too.
• Question : How do I test this alarm?
  Answer : Push and hold the button on the bottom of the unit until the alarm sounds.
• Question : Can this replace the 9120b by simply unplugging hard wire and putting the CO2/smoke detector in its place?
  Answer : Yes, but you may need to replace the battery.
• Question : Does this unit come with different adapters to replace a FireX smoke alarm to plug into electrical wires?
  Answer : There is a "power connector" with a black, white, and orange wire.
• Question : Is this 9120b a direct replacement for the 4120b?
  Answer : Yes, it was for the old BRK 4120Bs. You might have to put on the new mounting bracket, but it should fit right where the old bracket was.