Carbon Monoxide Alarm
Carbon monoxide alarms can be placed anywhere, not just the ceiling or high on a wall. They should be replaced every 5 to 7 years.
A gas you can't see shouldn't be guarded by a detector you can't read.
Carbon monoxide has no smell, no color, and no warning until now. See your home's CO levels in real time, before an alarm ever has to go off. While old detectors stay silent until it's already an emergency, this one shows you your air in real time so you see danger coming, not just hear it arrive.
30-Day Money Back Garente
Fast Response, Loud Alarm
Engineered for peace of mind, the built-in 85dB alarm delivers immediate, attention grabbing alerts to help protect you and your loved ones day or night.
Flexible Power Options
Whether you’re at home or traveling, switch between rechargeable battery and plug-in power for uninterrupted carbon dioxide protection.
Know Before CO Becomes a Threat
Carbon monoxide is an invisible, odorless, and colorless gas that gives no warning before it becomes dangerous. Without a CO detector, harmful levels can build up unnoticed, putting you and your loved ones at risk.
Protection You Can Count On
Our carbon monoxide detector combines accurate monitoring, fast response times, and reliable performance in one compact design. With continuous 24/7 protection, dual-power flexibility, and effortless installation, you can enjoy greater confidence knowing your home is always being monitored.
Safety Tips
Discover our amazing collection of products.
Fire Extinguishers
Keep in the kitchen and garage, but make sure to have the right grade for the type of fire that might occur. Safety is key.
Escape Ladders
Have at least one if your home has more than one story. Each room needs 2 escape routes; in most bedrooms it's the window, so have a ladder nearby.
Smoke Alarm
Place at least 10 feet from kitchen/stove, and on the ceiling or high on a wall, no more than 10 inches from top.
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Protect Your Home Please
We Care For You!!
The H16P turns invisible problems into visible ones. A furnace acting up, a car left running in the garage, a burner that didn't fully light normally you find out the hard way, or not at all. Now you see it on screen the moment it starts, with an 85dB alarm the second anything crosses the line. And on every normal night? One glance, and you know your family's air is fine.
"Fortunately, I hope I never have to rely on these in an emergency, but it's reassuring to have them installed. First Alert has a long-standing reputation for reliability, and these detectors were easy to install and integrate into my existing system. The combination smoke and carbon monoxide protection provides added peace of mind for my home and family. A purchase you hope you never need, but one you're glad to have"
"Nice design fits well on the wall. It was a little bit pricey but you can’t put a price on your families safety. I like that this was a combination of smoke and carbon monoxide detector. I also really like that is has a display screen on it that tells you the ppm of carbon monoxide in the air and the battery health, although it’s a ten year battery life which h is also a plus. Will probably buy another one to put in other end of house"
"What's not to like about a smoke detector that won't make you go on a slow motion hunt all over the house to figure out which smoke detector is chirping randomly every year? Double CO function and numeric display are added bonus! I'll never know how this one turned out in the end because I bought it to pass inspection when selling a house."
"I liked the idea of being able to install this anywhere and not needing to have electric ran to it. We moved into a lot cabin style house and getting power to a specific area was difficulty this was easy to setup and quality seems to be good. The alarm text let me know this is loud and can be heard a feels good knowing my family will be safe."
Our Key Statistics
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93%
Watch Out
Your ceiling detector wasn't designed to protect you it was designed to satisfy a building inspector. Bare-minimum sensor, no display, one job: make noise at the danger threshold. The H16P flips the design brief: six sensors and a live screen built to keep you informed all day, so "make noise" is the backup plan not the whole plan.
82%
Ouch!
Basic detectors only trigger at one fixed threshold they can't tell you levels are climbing, only that they've already peaked. And the longer that gas builds unnoticed, the higher the concentration your family is breathing before anything makes a sound.
Stay Ready So You Don't Have to Get Ready
Most detectors stay silent, show you nothing, and only speak up when it's already an emergency. The H16P watches with you six sensors and a live color screen built for one thing: knowing before it's dangerous.
Stay Ready So You Don't Have to Get Ready
Most detectors stay silent, show you nothing, and only speak up when it's already an emergency. The H16P watches with you six sensors and a live color screen built for one thing: knowing before it's dangerous.
0X more
Includes three accessories
Every H16P comes ready out of the box monitor, magnetic mount, and quick start guide. That's the whole list, because everything else is already inside: six sensors, the rechargeable battery, the color display, the alarm. No blade heads to replace, no batteries to stock up on, no accessories to buy later, no app to download. Stick it up, power it on, and you're protected from day one.
3.5X
Luxurious Brands
Go cheap and you get a $15 puck that shows you nothing. Go premium and you're at $150+ for the monitor, plus a monthly fee to unlock your own air readings in an app. The H16P skips both traps: six sensors, a live display, battery backup, and a magnetic mount, all in one box, one time. Way more on the screen, way less on the receipt.
Before & After Results
See the amazing transformations and results
Before
After
What Our Families Think
Trey.W,
Verified Customer
Its ceramic blade is the real hero it's like shaving with a cloud. I got a smooth, close trim on my sensitive bits with zero irritation, which is honestly all I ever wanted. Plus, you just swap out the head and you've got a proper nose hair trimmer too.
H16P Six-in-One Carbon Dioxide Detector
$59.99 $89.99
Dylan A.,
Verified Customer
I asked 10 girls if they want to go out with me wearing this scent…Everyone said yes.
H16P Six-in-One Carbon Dioxide Detector
$59.99 $89.99
Tamishea D.,
Verified Customer
Believe the hype. I was skeptical of the ads but it been blowing my mind. This is now my go to fragrance.
H16P Six-in-One Carbon Dioxide Detector
$59.99 $89.99
Frequently Asked Questions
How long does shipping take?
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We offer FREE insured shipping on all orders over $40.
Every order is quality-checked and processed within 1-3 business days. Once dispatched, estimated delivery is:
- USA: 10-15 business days
- Canada: 10-15 business days
You'll receive a tracking number the moment your order ships, so you can follow it door to door. Orders ship from our fulfillment network, and every package is insured if it's lost or damaged in transit, we replace it free, no questions asked.
Do you offer free returns?
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If a sensor acts up, the readings don't make sense, or it's just not for you, contact us within 30 days and we'll make it right with a refund or replacement. Our team responds fast and keeps it simple no interrogation, no hoops.
We built the HD16 for the most important job in your home: watching the air your family breathes. If we didn't stand behind it completely, you shouldn't trust it on your wall.
How can I track my order?
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You'll receive a tracking number via email once your order ships, allowing you to monitor delivery progress.