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smart fire sensors

Detect danger before
you even smell smoke

Undetected fires can do serious damage in just a few minutes. The battery-operated Smoke & CO Combo Detector, equipped with photoelectric sensors, keeps you in the clear. If smoke or excessive heat is detected, an alarm will sound, potentially alerting you before you even smell smoke.

best smoke and co detector

You can’t identify carbon monoxide, but our detector can

Keep your home and the people and pets you love safe
from carbon monoxide. While you can’t see, smell, or
taste this toxic gas, the intuitive Smoke & CO Combo
Detector uses electrochemical sensors that identify the
presence of CO right away, giving you time to take action.

best smoke and co detector + system integration

Smarter home, smarter response to alarms

When your Smoke & CO Combo Detector alarm
sounds, your system takes action automatically: 

  • In the event of fire, your HVAC system shuts off to
    slow the spread of flames for elevated fire safety.

  • Doors unlock so family can quickly exit and first
    responders can enter.

Smoke & CO Detector Specs

COLOR
White
SIZE
4.96″ø x 2.64″ Tall
FREQUENCY
345 MHz
SIREN LEVEL
85 dB
MOUNTING
Screws and bracket
BATTERY
2 CR123A batteries
BATTERY LIFE
5 years
PRODUCT PROTECTION PLAN
The Vivint Protection Plan* (VPP) offers ongoing support and coverage when you invest in a Vivint system.
SKU
VS-SMKCO2-345
GTIN
198715291841

Design your Vivint
system today

Drop us a line! Or skip the form
and call us now
844.481.8630

By clicking "Start Your Quote", you agree by electronic signature to:
1. The Electronic Disclosure Consent;
2. Receive recurring marketing communications from Vivint at the telephone number and email address you provide on this form, including calls, texts, emails, and voice messages delivered using automated dialing systems, prerecorded or artificial voice, and AI-enabled technologies (consent not required to make a purchase; reply “STOP” to opt-out of texts or “HELP” for help); and
3. Vivint's Terms of Service and Privacy Policy.

smart smoke detector and carbon monoxide alarm

Why choose the Vivint Smoke & CO Combo Detector?

Reliable detection

This fast and accurate CO and smoke detector identifies threats early, giving you time to act and keep home and family safe.

Better fire protection

Your home and family are safer with a detector that uses photoelectric sensors to identify excessive heat before you even smell smoke.

Instant alerts

A built-in wireless transmitter communicates directly with your Smart Hub and Vivint app, alerting first responders if necessary.

More safety

This detector works with your Vivint smart home to shut down your HVAC system in the event of fire to mitigate the spread of flames.

Battery powered

The battery-operated combination CO and smoke detector comes with a 5-year battery plus backup, so it’s always on.

24/7 Monitoring

If your detector is triggered, our support team is notified instantly. They’ll contact first responders if you can’t be reached.

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Home security companies

See how Vivint compares to the competition.

Feature
24/7 security monitoring with 2-way talk through panel Yes No No No Yes
Cameras use vision based AI and automated light/sound to deter crime Yes No No No Yes
Doorbell detects and protects packages Yes No No No No
Professional installation from experts on staff Yes Yes No No Yes
Products designed/developed in-house Yes No Yes Yes No
60 month interest-free financing Yes Yes No No No

(As of June 2026)

Frequently asked smoke and carbon
monoxide detector questions

Are combination smoke and carbon monoxide detectors good?

Absolutely. With a combination smoke and carbon monoxide detector you get double protection with a device that identifies life-threatening fire and CO. Technologies that work together to identify smoke and CO makes sense, given that carbon monoxide often builds up as a result of fire.

With a combination detector from Vivint you get the added protection that comes with 24/7 Monitoring. Our specialists are ready to respond to an alarm day or night whether you’re away or asleep in bed to ensure the safety of your home and family. See it and our other products in action.

Is it better to have separate smoke and carbon monoxide detectors?

Installing combination smoke and CO detectors is a simple way to streamline the interior of your home without sacrificing safety. Our combo detector is not hardwired, making installation easier. And fewer battery changes are necessary, and one unit requires less space than two separate units—convenient especially for smaller living spaces. Distinct alarms indicate whether smoke or CO is detected to avoid confusion.

Where do you put a combination smoke CO detector?

Placement of your combination smoke and CO detectors is much the same as mounting individual detectors. And because the smoke CO detector is not hardwired, installation is easy. According to the National Fire Protection Association, you should install carbon monoxide and smoke alarms in the following spots:

  • On each level of a multilevel home

  • Near bedrooms and sleeping areas

  • Any other areas required by law

To make sure you’re protected again carbon monoxide, combination detectors should also be mounted in the following locations:

  • Near sources of CO.Place CO detectors 5-20 feet from common sources of carbon monoxide in the home, such as your water heater, furnace, or space heaters. Make sure you don’t place detectors too close to the sources, which could result in false alarms.

  • Near your attached garage. Running vehicles produce carbon monoxide through their exhaust systems. When a car is in motion or idling in an open space, carbon monoxide and other emissions dissipate and are released into the air as pollution. In enclosed spaces like a garage, however, the concentration of CO can quickly reach deadly levels and can seep into your home.

Try to place detectors approximately 6 inches above or below the ceiling. If ceiling mounted, the detector should be positioned at least 6 inches away from the wall. Other things to keep in mind:

  • Smoke and CO detectors should always be 5 to 15 feet away from fuel burning appliances.

  • Nothing should cover or obstruct the detector.

  • Avoid placing detectors next to exterior doors and windows.

Keep in mind that these are minimum requirements. Depending on the size of your home you may need additional detectors.

ONE STOP SHOP
Vivint made, pro installed

We design and build our family of products in-house and our Smart Home Pros take care of home automation installation to ensure your devices connect and work together seamlessly.

SUPPORT AND CARE
In your corner, every step

Once your system’s up and running, we provide ongoing service support. And our monitoring team is available 24/7 to respond to alarms and help in an emergency.

Combine products for even more benefits

Vivint outdoor camera pro monitoring home perimeter

See outside

Protect your property with a camera that actively deters lurkers with light and sound and sends you notifications so you always know what's happening outside your home.

A hand presses a Vivint doorbell camera mounted on a home's front porch.

A more flexible and secure front door

Unexpected visitors? With the Vivint Doorbell Camera Pro and smart locks as part of your system, answer the door with the Doorbell Camera, let visitors in your home with Smart Locks, and lock up when they leave.

Smart Lock on door with a product image of a Smart Lock on bottom corner

Never carry keys again

Lock up with the press of a button or right form the Vivint app. With smart locks, you can set your system to arm when you lock the door, and know who's coming and going with unique access codes.

Customer reviews

Real customer reviews tell the true Vivint story

NICK BOBADILLA

Sep 5, 2026

To Alex Flores,

To Alex Flores, Thank you deeply for the great service you provide. You were professional, respectful, kind, and friendly throughout the entire process. You answered all of our questions and explained everything so clearly, making it very easy for us to understand how everything works. We truly appreciate your help and excellent service!

Becky Baker

Sep 5, 2026

Highly recommend Vivint

All I can say is Jeff our installer was hands down the best technician I have worked with!! Knowledgeable, friendly, responsive, and cleaned up after the install. We are very impressed with Vivint as a whole, from sales to install theyve been wonderful!

Joseph Wright

Sep 5, 2026

The representative Jordan Strachan

The representative Jordan Strachan, very knowledgeable and informative. Security system for my home was in the back of my brain until Jordan assisted me through this process. I couldn't be happier with vivint.

Kaye Robichaux

Sep 5, 2026

The technician was very kind

The technician was very kind, professional & knowledgeable.

Sompong Ouy

Sep 5, 2026

It was a great experience

It was a great experience. I really like the product love the front door camera equipment were easy to use. Thank you so much.

Customer

Sep 5, 2026

I love the product

I love the product. So up to date from the one I had. But I'm a little confused. I thought the all point of this equipment was to lower my light bill but it was more.

SEGIR ABDOLRAHMAN

Sep 5, 2026

Vivint door bell

It works as we were told and the person who installed that answer all my questions.

Albert ZIKRA

Sep 5, 2026

Everything was installed accurately and…

Everything was installed accurately and fast in one visit.

Stephenie Love

Sep 5, 2026

Nice product

Effortless install, quality equipment, great financing options.

JUANA MARIA PEYRANI

Sep 5, 2026

The Tech did a great job helping me…

The Tech did a great job helping me with the product.

Maria

Sep 5, 2026

I can see a live video of my entrance…

I can see a live video of my entrance while we are not at home.

ARNETTA NEAL

Sep 5, 2026

The salesperson

The salesperson

Julie Simmons

Sep 5, 2026

The transition was convient and fast

The transition was convient and fast. The technicians we're professional and courteous.Everything was explained in great detail.Absolutely recommend this company for your security needs.

Terri Harris

Sep 5, 2026

Very professional and knowledgeable

Very professional and knowledgeable

Rivers Falls jr

Sep 4, 2026

I love the way the cameras whistles at…

I love the way the cameras whistles at you that you are being recorded.

Welesh Weldemariam

Sep 4, 2026

I would like to control my camera in my…

I would like to control my camera in my phone

Ronnie Satterfield

Sep 4, 2026

The technician did a great job on the…

The technician did a great job on the install and you only need one app to control everything.

Rose Simos

Sep 4, 2026

The gentleman Jay who came to my home …

The gentleman Jay who came to my home to installed both the thermostat and doorbell was very knowledgeable and made the installation easy and quick.

Johnny L Davis

Sep 4, 2026

I like the security of the home…

I like the security of the home protection camera & lights. Also the salesman and installer was pleasant to deal with

Cristian Dihel

Sep 4, 2026

Logan was one of the best at explaining…

Logan was one of the best at explaining and answering any and all my questions. Just a great people person and his installation was fantastic and professional.

Lynnette Rennon

Sep 4, 2026

Still don’t have visibility to see…

Still don’t have visibility to see who’s at my door

Maurice Wyatt

Sep 4, 2026

Matt was a great tech who installed and…

Matt was a great tech who installed and instructed.

Sam Mad

Sep 4, 2026

Caleb was great and very detailed in…

Caleb was great and very detailed in the service and product.

Lovelle Jamison

Sep 4, 2026

Great service and the technician…

Great service and the technician answered all My questions and showed me how My home service works

ANGELITA TIPTON

Sep 4, 2026

The installer was so nice

The installer was so nice. He explained everything and answered all my questions. I am a 76 year old women and he very patient and kind.

Ariel Nieves

Sep 4, 2026

On time instalation

On time instalation, Very friendly and professional, and explain everything

Jessica Comeaux

Sep 4, 2026

The process with Vivint was super easy

The process with Vivint was super easy. The equipment has been reliable and our installation person was fantastic. We had Cristina out of Diboll Texas. She is awesome. Cristina is very knowledgeable and delivers excellent customer service.

Teresa Shaw

Sep 4, 2026

I’m still getting used to the product

I’m still getting used to the product. I’ve had to reboot the system twice since it was installed for some unknown reason.

Christy Davis

Sep 4, 2026

Customer service was superb from…

Customer service was superb from signing up to the install

Monica Corbett

Sep 4, 2026

Tech was nice and system is awesome

Tyler was so funny and a really nice guy. I love my alarm system. Especially, my door camera and how it whistles and talks.

Durrel Jenkins

Sep 4, 2026

Function is great

Function is great. App goes down at times

MONICA BALL

Sep 4, 2026

Everything!

Everything!

ERICA J MITCHELL

Sep 4, 2026

Kyle is the best!!!

On time,very respectful easy to use product,

John

Sep 4, 2026

Knowledgeable technician

Knowledgeable technician, fast installation, clean installation

Hubert Smith

Sep 4, 2026

Kind people and Great service.

Kind people and Great service.

Kathy Armstrong

Sep 4, 2026

Everything ran smooth

Everything ran smooth. Very nice Salesman and technician. We really have enjoyed having this system and are thankful the Salesman came by. (Normally I won't talk to Salesman).

Shandra Tindall

Sep 4, 2026

Our tech was amazing!

Our tech was amazing!

Patricia Azuakolam

Sep 3, 2026

The tech

The tech. Alex A was very helpful in helping us with our new system. He was very professional and patient he demonstrated great ability with his skills. Made me feel comfortable.

Travon Chapman

Sep 3, 2026

Took a while couldn’t understand the…

Took a while couldn’t understand the worker..

Renata Hawkins

Sep 3, 2026

I simply love it

I simply love it. If I have any issues I call the representative Jay,and he is immediately on it. I have had the ring but I like knowing that the house is more secure,also with the sensors. The ring battery keeps needing recharging. I don't have to worry about this system. As of right now,I don't see anything the company can do. I am still getting familiar with it

KET

Sep 3, 2026

Very knowledgeable salesperson and…

Very knowledgeable salesperson and installer. The only thing I wasn’t shown or it just didn’t stay with me- is opening the garage door with my phone. I will look into this further and may have to call in for more information. We like having this alarm so far.

Jaydee Deluca

Sep 3, 2026

Great experience overall

Great experience overall

Lee R.

Sep 3, 2026

I like the system and the tech was very…

I like the system and the tech was very professional!

Juan

Sep 3, 2026

In my opibetter than expectednion

In my opinion, Vivint is a trustworthy company; I haven't seen any hidden charges. Above all, the equipment hasn't given me any problems whatsoever so far. The installation process went smoothly, and the installer was very professional and respectful, which I really appreciate.

Laksana Kik

Sep 3, 2026

The technician was knowledgeable

The technician was knowledgeable, accurate and thorough. He provided a system that has so far been easy to use and provides us with significant security.

Carol

Sep 3, 2026

Excellent sales representative who went…

Excellent sales representative who went above and beyond to answer questions and get us set up.

April Durden

Sep 3, 2026

From the sales person to the install…

From the sales person to the install person was great.

Rated 4 out of 5 based on
66,680 reviews on

*Offer Terms & Conditions

All offers are subject to availability and may not be available in all states, provinces, or zip codes. Taxes and additional fees may apply.

HomeProtect Offer Terms

Vivint’s standard HomeProtect package includes 1 Vivint Security Hub, 3 Vivint Door & Window Sensors, 1 Vivint Motion Sensor, 1 Vivint Keypad, and 1 Vivint yard sign. The HomeProtect equipment package is regularly priced at $349.99, with professional installation priced at $199 and Vivint system monitoring at $29.99/mo., unless otherwise advertised. Offer for new Vivint customers only.

HomeProtect Pro Offer Terms

The HomeProtect Pro Offer is available to new and existing Vivint customers and requires a minimum $749.99 expenditure on equipment (after discounts), professional installation and execution of a Vivint services agreement. Monthly service fees vary based on the products and services you select. HomeProtect system purchases and reactivations of previously-installed systems are not eligible for this offer.

Financing Options

Financing for equipment purchases is subject to credit approval by one of Vivint’s third-party financing partners. Qualified customers may finance at 0% APR for up to 60 months, with terms varying by offer. Financing requires a separate agreement with the financing partner. Month-to-month service agreements are available when equipment is purchased upfront.

Vivint Systems & Services

System can support multiple cameras, subject to sufficient WiFi speeds. Without a Vivint services plan, product and system functionality is limited (including loss of remote connectivity). Contact a Vivint representative for complete equipment, services, and pricing details. Products and services in Louisiana provided by Vivint Louisiana Commercial Certificate #58280. See Vivint license numbers here. Click here for full terms of service.