Your Green Light Is Not a Safety Guarantee. Bilyvia Is.
Bilyvia shows you a live PPM reading the moment you plug it in. See CO, natural gas, and propane levels rise in real time — so you can act early, not just react when an alarm finally fires.
PROTECT EVERY ROOM
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Bilyvia Sentinel 4-in-1 Gas & CO Detector
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"I've had CO detectors for years. Never once thought about what the green light actually meant. Plugged Bilyvia in and saw a live number for the first time. That was enough for me."
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"Installed it in the kitchen on a Thursday. By Friday morning it had already picked up a small gas reading near the stove. Called the gas company. Loose fitting on the line. I had no idea."
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"I bought one for myself, then ordered four more — two for my daughter's house and two for my parents. Once you understand what a green light actually tells you, you can't go back."
How does it work?
How does it work?
Plug Bilyvia into any standard wall outlet and it starts reading immediately. Two built-in sensors — one electrochemical for CO, one catalytic for combustible gas — continuously sample the air and display a live PPM reading on screen. No setup, no app, no configuration. Protected in under 60 seconds.
How many do I need?
How many do I need?
One per sleeping area is the standard recommendation. For most 3-bedroom homes, a 3-pack covers the primary bedroom, a child's room, and the main living area near the kitchen or furnace. If you have a basement, attached garage, or additional floors, add one there too. The 4-pack covers every bedroom individually.
What do the readings mean?
What do the readings mean?
PPM stands for parts per million — the concentration of CO in the air around the device.
- 0–29 PPM — Normal. Air is clear.
- 30–50 PPM — Elevated. Ventilate and investigate the source.
- 70+ PPM — Dangerous. Leave immediately and call emergency services.
The screen also shows GAS LEL — the percentage of natural gas or propane present. Any reading above zero means gas is detected. Act immediately. Humidity is shown as a percentage — normal range is 30–50%.
How is it different?
How is it different?
Standard CO detectors show a green light and wait until CO reaches 70 PPM before alarming. By then, symptoms have already started. Bilyvia shows a live number from the moment you plug it in and alerts from 30 PPM — before headaches begin. It also detects natural gas and propane, which standard CO-only detectors cannot. One device. Four gases. A live reading instead of a status light.
Shipping & delivery
Shipping & delivery
Orders are processed within 1–3 business days and delivered within 7–12 business days after dispatch. Free shipping on all US orders — no minimum required. For any order questions, contact us at support@Bilyvia.com.
"I have a CO detector. The green light is on. We're safe."
The green light on a standard detector confirms one thing: the battery is in. It doesn't tell you the sensor is active, accurate, or about to alarm. Most CO-only detectors also can't detect natural gas or propane — which means a gas stove leak or a loose fitting on your water heater goes completely undetected.
- Green light = power only, not safe air
- Alarms only after 70 PPM — symptoms start at 30
- CO-only — can't detect natural gas or propane
- Live PPM number on screen at all times
- Alerts from 30 PPM — before symptoms begin
- 4-in-1: CO, natural gas, propane, and LPG
Alerts Hours Before a Standard Detector Would
If CO levels rise to a real emergency, Bilyvia alerts at 30 PPM — before headaches start, before judgment is impaired, before your family loses the ability to act.
Not 70 PPM, when symptoms have already been building for hours. Bilyvia pairs a loud 85dB audible alarm with a live number on screen — so you hear it and see it, from anywhere in the room.
A live number instead of a green light. Earlier warning instead of a late-stage alarm.
Bilyvia gives you a real PPM reading the moment you plug it in. When levels rise, you see it — in time to open a window, step outside, and call for help.
See the number, not a light
A live digital display shows exact gas levels in real time. Zero means clear. Rising means act.
Warned hours earlier
Alerts from 30 PPM — the point where prolonged exposure starts to cause symptoms. Not 70.
4 gases, 1 device
CO, natural gas, propane, and LPG — all monitored simultaneously. No blind spots.
Ready in 60 seconds
Plug into any standard wall outlet. No ladder, no wiring, no tools. On and working immediately.
CO Doesn't Stay in One Room. Neither Should Your Protection.
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Kitchen — Near Your Gas Stove
Your gas stove releases CO and combustible gas every time it runs. Breakfast, dinner, a late-night snack — Bilyvia monitors the air just feet from where your family eats, and shows you a live reading the whole time.
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Utility Area — Near Your Furnace or Water Heater
Furnaces and water heaters run quietly all day, every day. A hairline crack or a partially blocked vent can release CO continuously — no smell, no sound, no visible sign. This is where Bilyvia catches the readings families never knew they had.
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Bedrooms — Where Your Family Sleeps
Your family spends 7–8 hours a night in bedrooms with the door closed. If CO is building anywhere in your home, this is where exposure is longest — and where it matters most to have a live number, not just a green light.
Your family starts feeling it at 30 PPM. Most alarms wait until 70.
That 40-PPM gap is where most CO harm happens — in the silence between when your body starts reacting and when a standard detector makes a sound. Bilyvia shows you the number at 30, so you have time to act.
Bilyvia alerts at 30 PPM — giving your family time to act before a standard alarm ever sounds.
One screen. Every gas. All the time.
Bilyvia uses an electrochemical CO sensor and a catalytic combustible-gas sensor working continuously — not periodically — to measure CO, natural gas, propane, and LPG and display the live result in PPM.
Plug it in
Push Bilyvia into any standard US wall outlet. The screen activates immediately — no setup, no configuration.
It reads the air
Two sensors sample the air around the unit continuously — not every few minutes, continuously. CO, natural gas, propane, and LPG all measured at once.
You see the number rise
The live display updates in real time. If CO or gas starts to climb, you see it early — not after a standard threshold has already been crossed.
Bilyvia vs Standard CO Detectors
Real homes. Real detections.
The people who respond to CO calls chose this detector for their own homes.
Firefighters and HVAC technicians see the same thing every winter: a family in distress, a CO detector on the wall, and a green light still glowing. The device didn't fail. It just waited too long. Bilyvia was built to close that gap — making rising levels visible from 30 PPM so families have time to get out.
CO statistics sourced from publicly available US health data. Bilyvia is designed to provide earlier visibility of rising gas levels — it is not a substitute for emergency services or professional appliance inspection.
100-Day Money-Back Guarantee
If at any point in the first 100 days you're not satisfied — contact us at support@Bilyvia.com for a full refund. No forms, no restocking fees, no runaround.
customers ask for their money back
3-year warranty included on every unit.
If anything goes wrong, we replace it.
FAQ
Is Bilyvia actually different from what's at Home Depot?
Is Bilyvia actually different from what's at Home Depot?
Yes — in two specific ways. First, Bilyvia shows a live PPM number on screen at all times. Standard detectors from Home Depot show a green light, which only confirms power, not air quality. Second, Bilyvia alerts at 30 PPM — before symptoms begin. Most store-bought detectors don't react until 70 PPM, when exposure has already been happening for hours. They also can't detect natural gas or propane. Bilyvia covers all four gases in one device.
Will it false alarm when I cook on my gas stove?
Will it false alarm when I cook on my gas stove?
Normal cooking won't trigger a false alarm. The sensors are calibrated to detect sustained gas buildup, not brief spikes from everyday use. If you notice elevated readings while cooking, it usually means the kitchen needs more ventilation — which is actually useful information, not a malfunction.
How many do I actually need for my house?
How many do I actually need for my house?
One per sleeping area is the standard recommendation. For most 3-bedroom homes, a 3-pack covers the primary bedroom, a child's room, and the main living area near the kitchen or furnace. If you have a basement, attached garage, or additional floors, add one there too. The 4-pack covers every bedroom individually.
How hard is it to install?
How hard is it to install?
Not hard at all. Plug it into any standard US wall outlet. The screen turns on immediately. No ladder, no wiring, no tools, no app setup. Under 60 seconds from opening the box to fully working.
What if I plug it in and it reads high — what do I do?
What if I plug it in and it reads high — what do I do?
Leave the home immediately with everyone inside, including pets. Don't stop to open windows first. Once outside, call 911 or your gas company. Don't re-enter until emergency services have cleared the home and identified the source. A high reading on Bilyvia is exactly what the device is designed for — it gives you time to act before a standard alarm would have said anything at all.
How long does it last? What happens when it expires?
How long does it last? What happens when it expires?
The electrochemical CO sensor lasts 3 to 5 years — standard for this sensor type. Unlike standard detectors where the sensor expires silently while the green light stays on, Bilyvia's live display confirms the sensor is actively reading every time you check it. We'll remind you when replacement is due.
Does it also work as an emergency CO alarm?
Does it also work as an emergency CO alarm?
Yes. If CO or gas levels rise to dangerous levels, Bilyvia sounds an 85dB audible alarm — loud enough to wake a sleeping household. The difference from a standard alarm is that Bilyvia also warns you at 30 PPM, hours before a standard alarm would react. You get both early visibility and emergency alert in one device.
What is your return policy?
What is your return policy?
100-day risk-free trial. If you're not satisfied for any reason within 100 days, contact us at support@Bilyvia.com for a full refund. No forms, no restocking fees, no runaround. Bilyvia also includes a 3-year warranty — if anything goes wrong, we replace it.
How quickly will I get my order?
How quickly will I get my order?
Orders are processed within 1–3 business days and delivered within 7–12 business days after dispatch. Free shipping on all US orders, no minimum required. For any order questions, contact us at support@Bilyvia.com.