The Threat Your Body Can't Detect
It puts you to sleep before you know you're in danger.
Carbon monoxide doesn't burn. It doesn't sting your eyes. At low levels it feels like a headache — the kind you blame on a long day. By the time your body shuts down, your brain has already lost the ability to process that something is wrong.
VIGIL Pro display shows you the number rising — 10, 30, 70, 100 ppm — while you still have full capacity to get your family out. That window is everything. Most detectors don't give it to you.
One Device.Four Detectors.
Most homes have a CO alarm and nothing else. Comodi does everything in a single plug.
| VIGIL Pro | Standard |
Real-time CO display — shows exact PPM (0–2000) |
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Detects combustible gas leaks (natural gas, LPG, propane) |
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Professional electrochemical CO sensor |
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85dB alarm + red strobe when danger detected |
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Temperature & humidity monitoring |
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Under 5-second response time |
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No batteries, no wiring — plug and protect |
Protected in Under 3 Minutes
SHOP NOW-
1. Plug Into Any Outlet
Works on any 110V–220V wall socket worldwide. No wiring, no batteries, no setup. Uses less than 2 watts of power — always on, always watching.
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2. Watch Real Numbers
After a 3-minute calibration, the color LCD shows you live CO levels, gas concentration, temperature, and humidity — 24 hours a day.
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3. Know Before It's Critical
See a CO level rising from 0 to 80 ppm? Call your technician calmly. The 85dB alarm fires when levels hit the danger threshold — giving you full context, not just panic.
"I watched the display go from 12 ppm to 67 ppm over 20 minutes. No alarm yet — but I knew something was wrong. Called the gas company. Cracked heat exchanger. They said we got very lucky."
— David R., verified buyer · ★★★★★
Don't Leave Rooms Unprotected
ONE UNIT ISN'T ENOUGH.
CO and gas don't stay in one room. A single unit by the front door won't detect a propane leak forming in the kitchen at 2am. Most homes need 3–5 units for full coverage.
Bedrooms — Critical
CO builds while you sleep. You won't smell it, feel it, or wake up — unless you have a unit in the room.
Kitchen — High Risk
Gas stoves, ovens, and boilers are the #1 source of both CO and combustible gas leaks indoors.
Garage — Often Forgotten
A car idling for 2 minutes fills a closed garage with lethal CO. Most families have zero protection here.
Basement — Most Dangerous
Furnaces and water heaters silently leak CO for months. Basements trap it before it reaches any other detector.
The Question Nobody Asks Until It's Too Late
What happened in your home while you slept?
A standard detector sits on your wall and stays silent — right up until the moment it's life-or-death. There's no warning level. No rising number. No chance to act early. Just silence, then screaming.
Comodi runs a continuous report on your air, every second of every night. If something begins to build, you see it climb — and you have time to respond like a person, not a casualty.
4-in-1
CO, gas, temp & humidity in one plug
4.9★
Average across 40,000+ verified reviews
<5s
From first detection to display update
They Saw the Number Before the Alarm
STOP GUESSING. START KNOWING.
Free worldwide shipping. 90-day money-back guarantee. Lifetime replacement if it ever fails. There is no reason to wait.