The Silent Danger,
Now on a Screen Live CO
A plug-in carbon monoxide detector with smoke and gas detection, temperature and humidity — on one bright screen.
- Live CO reading in ppm
- Just plug in — no drilling
- Battery backup if power goes out
Free shipping · 30-day money-back
How It Works
Step 1
Plug it in
Near your furnace, gas stove, fireplace or bedroom. No tools.
Step 2
Watch the screen
See carbon monoxide in ppm, plus temperature and humidity, at a glance.
Step 3
Hear the alarm
If levels rise, a 100 dB alarm and flashing light warn everyone.
If the alarm sounds, get everyone outside to fresh air and call 911.
Get My DetectorChoose your pack
One for the furnace, one by the bedrooms
You save $99.90
Free USA 🇺🇸 shipping
Secure checkout · 30-day money-back
- —Order today
- —Ships
- —Delivered
Shipping is free · Taxes included in the displayed price
Customer Reviews
Susan P.
Verified Customer
“Plugged it in by the furnace. Seeing 0 ppm on the screen every time I walk past is oddly reassuring.”
Robert H.
Verified Customer
“Bought a second one for the RV. No setup at all — just plug it in and it works.”
Margaret W.
Verified Customer
“One in the hallway outside the kids' rooms. The digits are big enough that my mum reads them without her glasses.”
Jim B.
Verified Customer
“Works well at the cottage near the wood stove. Took me a minute to find the test button, otherwise great.”
Can Mom Read It? Yes.
Can Mom Read It? Yes.
Big digits, one screen, no app. Plug it in at your parents' place and you'll both know the air is fine.
- Large, bright display
- No setup, no Wi-Fi
- Battery backup during outages
Battery Alarm, Basic CO Alarm or Fayne 5-in-1?
Ceiling smoke alarm
Smoke only
| Carbon monoxide | Not detected |
|---|---|
| Screen | None |
| Install | Drill the ceiling |
Basic CO alarm
Beeps, no reading
| CO level | Hidden |
|---|---|
| Smoke & gas | No |
| Temp & humidity | No |
Fayne 5-in-1
Live CO on screen
| CO level | Live ppm |
|---|---|
| Smoke & gas | Yes |
| Install | Plug in |
Five Readings, One Outlet
Carbon monoxide comes first. Smoke and gas detection, temperature and humidity come with it.
- Carbon monoxide (ppm)
- Smoke and combustible gas
- Temperature and humidity
Why it matters
Carbon monoxide has no color, no smell and no taste.
It can build up from furnaces, gas stoves, fireplaces and generators — most often in winter, when windows are closed.
Source: CDC — Carbon monoxide poisoning. Have fuel-burning appliances checked every year.
The problem
You Can't See It. You Can't Smell It.
A ceiling smoke alarm doesn't detect carbon monoxide. Without a CO detector, you won't know until people feel sick.
Smoke rises — keep a ceiling smoke alarm too. This detector adds CO and gas detection at outlet height.
Get My Detector
What's in the Box
- Plug-in 5-in-1 detector (US/Canada plug)
- Built-in backup battery
- 100 dB alarm + flashing light
- Free shipping · 30-day money-back
Frequently Asked Questions
Where should I plug it in?+−
Near fuel-burning appliances (furnace, gas stove, fireplace) and in the hallway by bedrooms.
Does it replace my smoke alarm?+−
No. Smoke rises, so keep a ceiling smoke alarm. This detector focuses on carbon monoxide and adds smoke and gas detection.
Does it work during a power cut?+−
Yes, a backup battery keeps it running.
Does it fit Canadian outlets?+−
Yes, it uses the standard North American plug.
What do I do if it alarms?+−
Get everyone outside to fresh air and call 911.
How fast is shipping?+−
Free tracked shipping on every order. You get a tracking number by email as soon as your order ships.
What if I don't like it?+−
You have 30 days to return it for a full refund. Write to us and we'll sort it out.
Know the Air Your Family Breathes
Plug it in tonight. See carbon monoxide at a glance.
Get My DetectorFree USA 🇺🇸 shipping · 30-day money-back
Choose your pack
One for the furnace, one by the bedrooms
You save $99.90
Free USA 🇺🇸 shipping
Secure checkout · 30-day money-back
- —Order today
- —Ships
- —Delivered
Shipping is free · Taxes included in the displayed price