Featured Products

6-Year Battery-Powered Natural Gas Alarm

Revolutionary Sensing Technology Enables Superior Features and Performance

Model Number: ML-310ES

7-Year Battery-Powered Natural Gas Alarm

Works with Amazon Sidewalk | Superior Battery Life | Stay connected | Stay safe

Model Number: 807NAS

Home Safety Starts With You


DeNova Detect: The smartest battery-powered Natural Gas Alarm for your home.

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What to Look for In a Natural Gas Alarm?

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Gas Leak Safety Resources

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Installation Instructions

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Contact Us For Smarter Gas Leak Safety

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DeNova Detect Gives Back to the Community

See how New Cosmos $25,000 natural gas alarm donation helped support a devastated community in Edgewood, Maryland after a major gas explosion. We’re here to help protect people and property and we’ll continue to do so!

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West Reading Receives Free Natural Gas Alarms

See how New Cosmos $25,000 natural gas alarm donation helped support the community in West Reading, Pennsylvania after a major gas explosion. Installing Natural Gas Alarms are a vital step to prevent natural gas tragedies and loss of life as they alert residents of potential emergencies.

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About DeNova Detect

Since 1964, New Cosmos Electric Continues To Be The World-Leader In Residential Gas Explosion Prevention.


For over 60 years, we have been protecting people and property with innovative gas safety products. Our products create safe and secure spaces with the most advanced sensor technology possible. We adhere to the highest safety standards while offering the best value to our customers.


Our desire to design safe and comfortable environments always has and always will be at the core of who we are and what we do. We are currently the leading supplier of residential methane detectors in the global market with sales of over 70 million gas alarms.


We have developed and perfected a wide variety of products featuring our world-class gas sensor technology that include residential and industrial gas alarms, portable gas detectors, and odor sensors.

Established in 1960 and headquartered in Osaka, Japan, New Cosmos Electric has revolutionized the natural gas industry by providing reliable solutions and unmatched innovation. New Cosmos Electric is the global leader in gas sensor production and development. Our innovative product line and six decade history of success is a reflection of our commitment to our customers to always remain one step ahead.

New Cosmos Electric is the world leader in gas sensor production capacity and development. Our Micro-Electro Mechanical Systems (MEMS) technology has been implemented in gas sensors for a proven and substantial reduction in size and power consumption, allowing for the successful development of battery-powered Natural Gas Alarms.

We offer one of the earliest natural gas detection available in the US market (10% LEL) and our products significantly improve safety in residential and commercial settings. Our unique hot-wire semiconductor sensors offer high sensitivity for best-in-class gas detection. We strive to continually provide the highest value in life-saving technology by continuously optimizing our gas sensor technology.

New Cosmos Electric www.newcosmos-global.com/ formed a wholly owned subsidiary - New Cosmos USA, INC. in 2018. New Cosmos USA is headquartered in Chicago and has developed the DeNova Detect brand to provide gas alarms to some of the largest utility companies in the U.S. today. Our global team remains committed to deliver cutting-edge safety solutions to our customers in order to detect and protect what matters most.