2-Pack First Alert Precision Detection Wireless Smoke and CO Alarms with Voice and Location Alerts

Protect your home against both smoke and carbon monoxide with this 2-pack of First Alert Precision Detection combination alarms. Each battery-powered unit features advanced smoke-detection technology, carbon monoxide detection, wireless interconnection, and voice alerts that identify both the type and programmed location of a potential threat.

When one compatible interconnected alarm detects danger, all connected alarms sound. Because no household electrical wiring is required, the alarms offer flexible installation in locations permitted by the owner’s manual and applicable local codes.

Key Features

• Two combination smoke and carbon monoxide alarms

• 2-in-1 detection for smoke and CO

• Advanced Precision Detection technology

• Designed to reduce nuisance alarms

• Designed to provide earlier warning of common fire types

• Wireless interconnection between compatible alarms

• When one interconnected alarm sounds, all connected alarms sound

• Voice identifies smoke or carbon monoxide

• Voice announces the programmed threat location

• Supports up to 11 selectable voice locations

• One-touch test and silence button

• Low-battery warning

• End-of-life warning

• Optional alarm and battery locking features

• Battery-powered installation

• Four AA batteries included—two per alarm

• Meets UL 217 8th Edition smoke-alarm standards

• Meets UL 2034 4th Edition carbon-monoxide alarm standards

• 10-year limited warranty

Smoke and Carbon Monoxide Protection

Each unit combines smoke and carbon monoxide detection in one alarm, reducing the need to install separate devices in the same approved location.

Advanced Precision Detection technology is designed to improve warning performance for common residential fires while reducing nuisance alarms. The carbon monoxide sensor monitors for dangerous CO concentrations and activates the alarm according to its certified response parameters.

Carbon monoxide is colorless and odorless. Follow the placement, testing, and replacement instructions in the owner’s manual to help ensure proper operation.

Voice and Location Alerts

The voice alert tells occupants whether the detected threat is smoke or carbon monoxide and announces its programmed location. Up to 11 location labels are available, helping distinguish where the danger was first detected.

Selectable locations may be used for areas such as bedrooms, hallways, living rooms, or basements, depending on the options provided by the alarm.

The “11 locations” feature refers to programmable voice-location choices. It does not indicate that only 11 alarms can be interconnected.

Wireless Whole-Home Interconnection

Compatible alarms communicate wirelessly without an interconnect wire. If one connected alarm detects smoke or carbon monoxide, every properly paired alarm in the network sounds.

This helps extend warnings beyond the room where the hazard originates. The exact number and models of compatible alarms are not specified in the supplied product information; consult the owner’s manual before adding other devices to the network.

Wireless interconnection does not mean Wi-Fi or app connectivity. Smartphone alerts, remote monitoring, and smart-home integration are not specified.

Battery-Powered Installation

Each alarm operates using two AA batteries. Four batteries are included in the package, providing two for each alarm.

Because the alarms are battery powered, no 120 V hardwired electrical connection is required. They must still be mounted and positioned according to the owner’s manual and applicable local requirements.

Test, Silence, and Status Warnings

A one-touch button provides convenient testing and eligible alarm silencing. Integrated alerts notify users when battery power is low and when the alarm reaches the end of its service life.

Optional locking features can help discourage unauthorized removal of the alarm or its batteries. Refer to the manual for setup and use instructions.

Safety Standards

The alarms are listed as meeting:

• UL 217 8th Edition smoke-alarm standards

• UL 2034 4th Edition carbon-monoxide alarm standards

Product certification does not automatically mean every installation complies with local residential or municipal requirements. Alarm quantity, positioning, spacing, and replacement rules vary by jurisdiction.

Specifications

• Brand: First Alert

• Model: FSMCO500VCL2

• Product type: Combination smoke and carbon monoxide alarm

• Quantity: Two alarms

• Detection: Smoke and carbon monoxide

• Smoke technology: Advanced Precision Detection

• Alert type: Audible alarm and voice alert

• Location announcement: Up to 11 selectable locations

• Interconnection: Wireless with compatible alarms

• Power source: Battery

• Batteries required: Two AA batteries per alarm

• Batteries included: Yes

• Total included batteries: Four AA batteries

• Controls: One-touch test and silence button

• Status alerts: Low battery and end of service life

• Locking features: Optional alarm and battery locks

• Smoke standard: UL 217 8th Edition

• Carbon monoxide standard: UL 2034 4th Edition

• Dimensions per alarm: 5" diameter × 2" H

• Listed weight: 9.3 oz.

• Warranty: 10-year limited warranty

• Condition: New

What’s Included

• Two First Alert Precision Detection smoke and CO alarms

• Two mounting brackets

• Four AA batteries—two per alarm

• Owner’s manual

Additional compatible alarms and mounting tools are not specified as included.

Ideal For

• Bedrooms and nearby hallways

• Living areas

• Multiple-floor homes

• Homes without hardwired alarm connections

• Replacing compatible battery-powered alarms

• Building a wireless interconnected alarm network

• Locations requiring both smoke and CO detection

Final placement must follow the owner’s manual and applicable local codes.

Why It Stands Out

These alarms combine two forms of hazard detection with spoken threat identification and wireless whole-home notification. Instead of relying only on a siren, the voice alert identifies whether the danger is smoke or carbon monoxide and announces the programmed location.

Battery-powered installation eliminates the need for AC wiring, while included batteries, low-battery warnings, end-of-life notification, and optional locking features support convenient ongoing use.

Installation and Safety

• Read the complete owner’s manual before installation.

• Install alarms only in approved locations.

• Follow all local fire, building, and carbon-monoxide alarm requirements.

• Install two AA batteries in each alarm.

• Program the appropriate voice location for each unit.

• Pair the alarms according to the wireless interconnection instructions.

• Test each alarm immediately after installation.

• Confirm that all interconnected alarms sound during network testing.

• Test alarms regularly as directed by First Alert.

• Replace batteries when the low-battery warning occurs or as instructed.

• Never remove batteries to silence an active alarm without confirming there is no emergency.

• Do not paint, cover, or obstruct the alarms.

• Replace each alarm when its end-of-life warning activates.

• If a smoke or CO alarm sounds, move to fresh air or safety as appropriate and contact emergency services.

• Never ignore a carbon monoxide warning.

• Smoke and CO alarms help reduce risk but cannot prevent every incident or guarantee escape.

Warranty and Support

The alarms include a 10-year limited warranty. Complete coverage, exclusions, and replacement procedures are provided in the owner’s manual and through First Alert.

First Alert customer service: 1-800-323-9005

Frequently Asked Questions

How many alarms are included?

The package contains two combination smoke and carbon monoxide alarms.

Does each alarm detect both smoke and CO?

Yes. Every unit provides both smoke detection and carbon monoxide detection.

What does the voice alert announce?

It identifies whether the detected threat is smoke or carbon monoxide and announces the programmed location.

What does “up to 11 locations” mean?

It refers to the available programmable voice-location labels. It is not the stated maximum number of alarms in a network.

Are these alarms hardwired?

No. They are powered by AA batteries and do not require a 120 V AC connection.

Are batteries included?

Yes. Four AA batteries are included—two for each alarm.

Do the alarms interconnect wirelessly?

Yes. Properly paired compatible alarms can communicate wirelessly so that when one sounds, all connected units sound.

Do they connect to Wi-Fi or a smartphone app?

Wi-Fi, app control, and smartphone notifications are not specified. The wireless function is intended for alarm-to-alarm interconnection.

Can they connect to any First Alert alarm?

Compatibility varies by model. Consult the owner’s manual or First Alert’s compatibility information before adding other alarms.

Do they provide low-battery and replacement warnings?

Yes. The alarms include both low-battery and end-of-life warnings.

What standards do they meet?

They are listed as meeting UL 217 8th Edition for smoke alarms and UL 2034 4th Edition for carbon monoxide alarms.

How long is the warranty?

The product includes a 10-year limited warranty. Refer to the manual or First Alert for complete warranty terms.