✓ Energy-Efficient
✓ Eco-Friendly
✓ EASY TO SET UP
✓ 4-in-1 Advanced Detection
✓ Energy-Efficient
✓ Eco-Friendly
✓ EASY TO SET UP
✓ 4-in-1 Advanced Detection
✓ Energy-Efficient
✓ Eco-Friendly
✓ EASY TO SET UP
✓ 4-in-1 Advanced Detection
✓ Energy-Efficient
✓ Eco-Friendly
✓ EASY TO SET UP
✓ 4-in-1 Advanced Detection
✓ Energy-Efficient
✓ Eco-Friendly
✓ EASY TO SET UP
✓ 4-in-1 Advanced Detection
✓ Energy-Efficient
✓ Eco-Friendly
✓ EASY TO SET UP
✓ 4-in-1 Advanced Detection
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
Kynvale DualSense 4-in-1 Gas & CO Detector
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NO. 1
Portable Gas & CO
Detector

Kynvale DualSense 4-in-1 Gas & CO Detector®

Excellent 49,000+ Reviews

Real-time monitoring
Real-time monitoring
Compact/portable
Compact/portable
Travel-ready design
Travel-ready design
Dual alarm
Dual alarm
In Stock, Order Today To Receive It By

90-Day Money Back Guarantee

Your dog uses it or you don't pay. Test it for 90 days. If they won't use it, return it for a complete refund. No questions. No hassle.

Description +

Protect your home with the Kynvale Carbon Monoxide & Natural Gas Detector, designed with dual-sensor technology to detect both carbon monoxide and combustible gases such as LPG and natural gas. Ideal for kitchens, basements, and other high-risk areas, this compact device delivers 24/7 continuous monitoring, eliminating the need for multiple safety devices.

Its intelligent 4-stage alert system provides immediate warnings as gas or CO levels rise, using clear visual indicators and a powerful 85dB alarm that increases in speed and volume as danger escalates—giving you critical time to respond.

Installation is effortless with a plug-and-play design—no wiring, tools, or complicated setup required. Simply plug it into any standard outlet and protection begins instantly.

Beyond gas detection, the unit also includes real-time temperature and humidity monitoring, helping you maintain a safer, more comfortable indoor environment.

Key Features +
  • 4-Stage Gas & CO Alert System for Accurate Risk Awareness

    Features four real-time safety levels with clear visual indicators: Green (Safe), Yellow (Caution), Orange (Warning), and Red (Danger). Monitors carbon monoxide from under 50ppm up to 999ppm and combustible gas levels from below 5% to above 15% LEL, providing precise awareness as conditions change.

  • Dynamic Alarm That Intensifies with Risk

    Equipped with a powerful 85dB alarm that becomes louder and faster as gas or CO levels rise, paired with bright LED alerts to ensure immediate attention in emergency situations.

  • Plug-and-Play Installation – Protection in Seconds

    No wiring or setup required. Simply plug into any standard outlet for instant operation, making it ideal for kitchens, boiler rooms, basements, and other high-risk areas.

  • Built-In Temperature & Humidity Monitoring

    Goes beyond gas detection by continuously displaying indoor temperature (14°F–122°F) and humidity levels (0–95% RH), helping you maintain a safer and more comfortable environment.

  • 24/7 Dual-Sensor Protection for CO & Combustible Gas

    Combines carbon monoxide and flammable gas (LPG and natural gas) detection in one compact device, delivering reliable round-the-clock monitoring with fewer false alarms—no need for multiple detectors.

Important Note

This is a non-smart device and does not support mobile app or phone control.

Safety Information +

This detector is an essential safety device. Please read and follow all instructions carefully before use. Correct placement and routine testing are critical to ensure proper operation. Do not obstruct the air inlets or outlets at any time. If an alarm sounds, immediately follow the instructions outlined in the “Alarm Indications” section.

See it in action

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The Portable Detector That Catches What Others Miss

Most portable or travel CO detectors only monitor carbon monoxide, leaving travelers vulnerable to other common gas threats. While plug-in multi-gas detectors exist, they aren’t portable, making them unsuitable for RVs, rentals, or on-the-go use.

Kynvale changes the game. Our device delivers true multi-gas protection in a travel-ready, compact form factor. It’s not just a portable CO detector—it’s a complete portable gas protection system, keeping you safe wherever you go.

With Kynvale, you don’t settle for partial safety—you get all-in-one, real-time protection against carbon monoxide and combustible gases in a device smaller than your phone.

All-in-One Compact Detector for 12+

All-in-One Compact Detector for 12+ Dangerous Gases

Most portable detectors only monitor carbon monoxide, leaving other dangerous gases undetected. Kynvale changes that.

It monitors multiple threats, including:

  • Carbon monoxide (CO)
  • Natural gas / Methane
  • Propane / LPG
  • Butane
  • Sewer gas
  • Kerosene vapors
  • Gasoline fumes
  • …and more

Whether it’s a faulty water heater producing CO, a propane leak in your RV, or natural gas seeping from old pipes in a European rental, Kynvale detects it all.

Other detectors leave you guessing. Kynvale leaves nothing to chance.

Detect Every Gas Threat

Detect Every Gas Threat in Real-Time

Our full-color LCD does more than display carbon monoxide levels—it shows all detected gases, along with temperature and humidity, so you always know the state of your environment at a glance.

  • CO concentration: 0–2000 PPM
  • Combustible gas levels: 0–10% LEL
  • Room temperature
  • Humidity percentage

Green numbers indicate safe air. As numbers rise, it’s time to take action.

No guessing. No uncertainty. No 3 a.m. anxiety.

Multi-Gas Protection That

Multi-Gas Protection That Fits in Your Bag

Most multi-gas detectors are bulky plug-in units meant for home use—not for travel. Kynvale changes that.

Its compact design fits easily in your carry-on, purse, or RV storage compartment, while universal voltage (110V–220V) ensures it works anywhere in the world.

For the first time, complete gas protection goes wherever your family goes—giving you peace of mind on the road or away from home.

The Threats Change. Kynvale Keeps You Safe.

Complete Multi-Gas Safety in a Single Device

RVs & Campers

Propane powers your fridge, stove, and heater—but a single loose connection can fill your RV with gas that pools at floor level, right where your kids sleep—but Kynvale will detect it, keeping your family safe in real time.

Airbnb & Vacation Rentals

You don’t know when the gas lines were last inspected. You don’t know if the water heater is venting properly or if the bathroom P-trap is dry and releasing sewer gas. With Kynvale, you don’t have to wonder— it detects the dangers for you.

International Travel

Older heating systems. Different safety standards. Coal gas, kerosene, aging natural gas infrastructure. When you can't read the inspection certificate, bring your own protection. Kynvale ensures you’re safe, no matter where you stay.

Cabins & Lake Houses

Propane heaters. Wood stoves. Generators running nearby. Seasonal properties that sit vacant for months. Kynvale keeps watch over the full range of gas and CO threats these spaces present, giving you complete peace of mind.

Boats & Houseboats

Enclosed spaces. Propane stoves. Gasoline engines. Poor ventilation. On boats, dangerous gases build up faster. Multi-gas detection isn’t optional—it’s a must. With Kynvale on board, you get real-time alerts to stay safe.

RVs & Campers

Propane powers your fridge, stove, and heater—but a single loose connection can fill your RV with gas that pools at floor level, right where your kids sleep—but Kynvale will detect it, keeping your family safe in real time.

Airbnb & Vacation Rentals

You don’t know when the gas lines were last inspected. You don’t know if the water heater is venting properly or if the bathroom P-trap is dry and releasing sewer gas. With Kynvale, you don’t have to wonder— it detects the dangers for you.

International Travel

Older heating systems. Different safety standards. Coal gas, kerosene, aging natural gas infrastructure. When you can't read the inspection certificate, bring your own protection. Kynvale ensures you’re safe, no matter where you stay.

Cabins & Lake Houses

Propane heaters. Wood stoves. Generators running nearby. Seasonal properties that sit vacant for months. Kynvale keeps watch over the full range of gas and CO threats these spaces present, giving you complete peace of mind.

Boats & Houseboats

Enclosed spaces. Propane stoves. Gasoline engines. Poor ventilation. On boats, dangerous gases build up faster. Multi-gas detection isn’t optional—it’s a must. With Kynvale on board, you get real-time alerts to stay safe.

Trusted by 10,000+ Families for Gas Safety

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Frequently Asked Questions

I already have a portable CO detector. Why do I need this? +

CO detectors only detect carbon monoxide. But propane leaks, natural gas, methane, and other combustible gases are just as dangerous—and just as common in rentals and RVs.

Your CO detector will stay silent while these hidden threats build.

Kynvale catches what your current detector misses.

Are these other gases really a risk when traveling? +

Absolutely.Propane powers most RVs and many cabin heaters. Natural gas fuels stoves and water heaters in millions of rentals. Older international properties often rely on aging gas infrastructure. Sewer gas can build up in vacant rentals.

These aren’t theoretical risks—they’re everyday realities that CO-only detectors completely ignore.

Don't I need separate detectors for different gases? +

That’s the old way. Kynvale combines carbon monoxide detection, combustible gas detection, temperature monitoring, and humidity tracking in one compact device.

Instead of packing multiple detectors—or risking going without protection—you get complete, all-in-one safety in a device smaller than your phone.

How does it detect so many different gases? +

Kynvale uses advanced sensor technology designed to recognize the chemical signatures of combustible gases. Whether it’s methane from a gas leak, propane from an RV appliance, or gasoline vapors from an attached garage, the sensor detects rising levels early and alerts you before they reach dangerous thresholds.

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Our Money-Back Guarantee

We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 90 days for a full refund.

SHOP NOW!
100% Satisfaction
Fast Shipping
Easy Returns
Premium Product
Premium Product

Our Money-Back Guarantee

We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 90 days for a full refund.

SHOP NOW!
100% Satisfaction
Fast Shipping
Easy Returns
Premium Product