★★★★★ 4.9/5 — trusted by 12,800+ households
See the threat before it becomes an emergency
Carbon monoxide has no color, no smell and gives no warning. Dayguard shows you live readings and alerts you from 30 PPM — minutes before standard detectors react.
- Detects 4 threats: carbon monoxide, natural gas, propane/butane & humidity
- Real-time display with exact PPM readings — no guessing, no blinking lights
- Early warning from 30 PPM — reacts before standard detectors even wake up
- Ready in 2 minutes — plug it in, done. No tools, no mounting
100 Day Money-Back Guarantee - 60% Off
“On duty I see again and again how much difference a few early minutes make. A detector that shows low readings buys your family exactly the time that counts.”Captain Mark Peterson – Fire Department
Why this matters
Carbon monoxide is underestimated
Smoke alarms are mandatory — CO detectors are not. Yet the danger strikes exactly where a smoke alarm notices nothing.
3,000+
CO poisonings per year in the U.S. alone
Hundreds
of deaths every year — many of them preventable
In their sleep
is when it hits most victims — unnoticed
Know the threat
What is carbon monoxide — and why it concerns almost every home
Carbon monoxide (CO) forms wherever fuels like gas, oil, wood or coal don't burn completely. It's invisible and odorless — and it quietly blocks your body's oxygen supply, because CO binds to red blood cells roughly 300 times more strongly than oxygen. Even small amounts matter: first symptoms can appear from around 30 PPM. For children, pregnant women, seniors and pets, the risk is even higher.
Where carbon monoxide forms
What happens in your body
What carbon monoxide does to the body
30PPM
First signs
Headache, fatigue, mild nausea. Carbon already sounds the alert here.
50PPM
The strain increases
Dizziness, trouble concentrating, racing heart. Your body is under real stress.
70PPM
Only now do many detectors react
Critical range — precious time has already passed.
Dayguard vs. standard detectors
The difference that decides over minutes
| Feature | Dayguard X4 | Standard detectors |
|---|---|---|
| Warning threshold | from 30 PPM | often only at 50–70 PPM |
| Detects multiple gases | ✓ CO, natural gas, propane | ✕ CO only |
| Exact readings | ✓ Live PPM | ✕ blinking light/sound only |
| Humidity & temperature | ✓ | ✕ |
| Installation | Plug in, 2 min. | Drilling & batteries |
| Power | Continuous via outlet | Battery (can die) |
The science, simply
Built to warn you earlier
Real-time visibility, four readings, and a warning threshold that doesn't wait for an emergency.
4-in-1 sensor
Carbon monoxide, natural gas, propane/butane and humidity — one device instead of four.
Clear-number display
Exact PPM readings in real time — you see the danger instead of guessing it.
Early warning from 30 PPM
Alerts earlier than standard detectors — you gain the minutes that matter.
2-minute setup
Plug it in, done. No drilling, no tools, no app required.
Buy with confidence
Zero-risk promise
100 days
risk-free trial — full refund if you're not convinced
24 months
warranty included on every device
4.9/5
average rating from 12,800+ customers
What customers say
Why families trust Dayguard
★★★★★
“Finally I see real numbers instead of a little green light. Setup took less than two minutes.”
Sabine M.Verified buyer
★★★★★
“I had no idea my gas heating could be a risk. So glad I found dayguard! Don't need to sleep with fear anymore.”
Thomas S.Verified buyer
★★★★★
“We got one for our RV. Small, reliable, and you can read the value instantly. Highly recommend.”
Andreas W.Verified buyer
Common questions
Everything you want to know before you buy
Which gases does Dayguard detect?
Carbon measures carbon monoxide (CO), natural gas and propane/butane, plus humidity and temperature — four readings in one device.
How many detectors do I need?
Rule of thumb: one per floor, plus one in each room with a potential source (heating, kitchen, bedroom). For most homes, 2–3 units are ideal.
Do I need to install or mount anything?
No. Plug Carbon in and it's ready. No drilling, no tools, no app.
Why from 30 PPM and not later?
Many standard detectors only alarm at 50–70 PPM. Carbon shows a reading from 30 PPM — you gain precious time to air out and act.
How long does the sensor last?
The sensor is built for years of continuous use. See the product description for lifespan and warranty details.
Does it work during a power outage?
Carbon runs on continuous power via the outlet. For outage protection, consider a model with battery backup — just ask us.
Safety you can't see — but feel
Don't wait for the emergency. Protect your home with Dayguard today.