Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector
Gasfence Carbon Monoxide & Gas Detector

Gasfence Carbon Monoxide & Gas Detector

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Protect your family from the silent killer

Gasfence™ is an easy-to-use CO & gas detector that gives you real-time readings for carbon monoxide, combustible gas, temperature, and humidity helping you stay aware of potential danger before it becomes an emergency.

  • Real-Time Danger Levels — Monitor CO in PPM and fuel gas in %LEL on a clear, easy-to-read color display.

  • Plug & Protect — No ladder, no tools, no electrician. 30 seconds to install.

  • Works for Whole Family — Protects kids, parents, grandparents everyone under your roof
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Free shipping

60-day returns

Secure Payment

Where Should I Place Gasfence?

For the best monitoring, place Gasfence™ in areas where fuel-burning appliances or combustible gases may be present.

 

● Kitchen — Near gas stoves and cooking appliances

● Bedroom — For overnight monitoring and added peace of mind

● Living Room — Monitor common areas where your family spends time

● Garage — Near potential fuel or exhaust sources

● RV / Camper — Ideal for compact spaces with gas appliances

● Utility Room — Near furnaces, boilers, or water heaters

 

Tip: Follow the installation and placement instructions included with your Gasfence™ for your specific setup.

Shipping Informations

Fast & Secure Shipping

Enjoy free delivery on all your orders, with no minimum purchase required.
 

Once you place your order, it is immediately sent to our shipping team for processing. You'll receive an email with a tracking number as soon as it ships.

 

We work with trusted shipping carriers like Yunexpress, USPS, DHL, FedEx, Aramex, and various local couriers.
 

Our processing time is typically 1-2 business days.

What’s Included?

1× Gasfence™ CO & Gas Detector

1× Power Adapter / Charging Cable

1× User Manual

1× Mounting Hardware

1× 9V Battery Backup Compartment (9V battery not included)

Verified Buyer

Sarah M.

I wanted something more informative than a basic alarm, and Gasfence™ delivers. Seeing CO, gas, temperature, and humidity readings together makes monitoring our home incredibly convenient.

How Gasfence Detects Hidden Gas Dangers Before They Become an Emergency

Carbon monoxide and combustible gas can build up in your home without obvious warning. You can't see carbon monoxide, and certain gas leaks may be difficult to notice before concentrations become dangerous.

 

That's why simply relying on your senses isn't enough.

 

Gasfence continuously monitors carbon monoxide and combustible gas levels while also tracking temperature and humidity in real time.

 

Its high-precision sensors and clear color LCD display help you stay informed about what's happening in the air around you.

 

Instead of wondering whether your home is safe, Gasfence gives you the information and alerts you need to respond when abnormal levels are detected.

How It Works

Setup takes minutes. Monitoring starts right away.

One Device. Complete Air & Gas Monitoring.

Real-Time CO Monitoring

See carbon monoxide levels displayed in PPM on the large color LCD, helping you stay informed about changes in the air around you.

Clear Color Display

See CO, gas, temperature, and humidity readings together on one high-definition LCD screen that's easy to read at a glance.

Live Gas Detection

Monitor combustible gas levels in %LEL with a dedicated catalytic combustion sensor designed to provide responsive gas detection.

Temperature & Humidity

Track temperature and relative humidity in real time alongside your gas readings giving you a more complete picture of your indoor environment.

Introducing: The Gasfence™ CO & Gas Detector

Gasfence™ is an easy-to-use 5-in-1 detector designed to give you real-time readings for carbon monoxide, combustible gas, temperature, and humidity — all from one compact device.

 

Its high-precision sensors and large color LCD display make it simple to monitor your indoor environment and stay informed when detected levels change.

 

With adjustable sound and brightness controls plus optional 9V battery backup, Gasfence™ is designed to provide reliable monitoring throughout your home.

 

Because you shouldn't have to wait for danger to become an emergency before you know what's happening. Gasfence™ helps you see it sooner.

A threat you’ll never sense

No color. No smell. No obvious warning — Gasfence™ helps you monitor CO and combustible gas levels in real time, so you’re not relying on your senses alone.

The silent danger

You can’t see it. You can’t smell it. And you may not know it’s there.

Carbon monoxide is a colorless, odorless gas that can come from fuel-burning appliances such as furnaces, water heaters, stoves, fireplaces, and vehicles. Without reliable monitoring, dangerous levels can build up before you realize there's a problem.

0 PPM

Gasfence™ displays real-time CO levels so you can see what's happening
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150+ PPM

Gasfence™ reaches its specified alarm level and activates audible & visual alerts
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24/7

Continuous monitoring while powered — with optional 9V battery backup for outages

4.8 · 2,127 verified Customers

What Our Customers Are Saying

See Gasfence™ In Action Today

Watch how Gasfence™ monitors CO, gas, temperature, and humidity.

What Makes Gasfence™ So Different

Gasfence™ should visually feel like the simplest way to monitor your home’s air and gas safety.

Works

OTHERS

Detects low-level CO (0 ppm)

Real-Time PPM Display

Detects natural gas leaks

Detects propane/LPG

Temp & humidity monitoring

Easy to install

30-Day Guarantee

Works

FAQ

Frequently Asked Questions

How is Haven different from my current detector?

Most detectors only show a green light — which stays on even when the sensor is dead. They don't alarm until 70 PPM, which is AFTER 1-4 hours of exposure. Haven shows you real-time levels from 30 PPM on a digital display. You see the truth, not a light that lies.

Why should I choose the 3-Pack?

A single detector only monitors the area where it's installed. The 3-Pack lets you place Gasfence™ in multiple important areas of your home, such as bedrooms, kitchens, living spaces, or garages, for broader coverage.

Can Gasfence™ detect carbon monoxide in real time?

Yes. Gasfence™ continuously displays carbon monoxide levels in PPM on its large color LCD screen, allowing you to monitor readings in real time.

Is it hard to install?

No. Plug it into any eye-level outlet. That's it. Takes 30 seconds. No ladder, no tools, no electrician.

Does Gasfence™ work during a power outage?

Yes. Gasfence™ supports a 9V battery backup, allowing the detector to continue operating when primary power is unavailable. The 9V battery is not included.

What information can I see on the display?

The large color LCD can show CO levels (PPM), fuel-gas levels (%LEL), temperature (°F), and humidity (RH%), giving you multiple readings in one place.

30-Day Money-Back Guarantee

Your Gasfence™ purchase is protected by our 30-day 100% money-back guarantee. If you're not completely satisfied with your detector, simply reach out to us within 30 days and we'll help make it right or refund your purchase. Feel confident knowing your home’s safety comes with zero unnecessary risk.

Get Gasfence™ Today →

4.9 I 89 Reviews

Protect Every Room. Protect Everyone.

Carbon monoxide and gas leaks can happen anywhere — the bedroom, kitchen, garage, or living room. With the Gasfence™ 3-Pack, you can place protection throughout your home and keep real-time air monitoring within reach, day and night.

Get the 3-Pack — Full Home Coverage →

✔ 3 Detectors

✔ Whole-Home Coverage

✔ 24/7 Peace of Mind
Gasfence Carbon Monoxide & Gas Detector

Gasfence Carbon Monoxide & Gas Detector

4.8 · 2,127 verified Cautomers