Natural Gas Alarm, Only 10 Year 100% Battery-Powered Detector in USA, Alerts 11 Minutes Faster, Voice Alerts in English & Spanish, UL1484 Listed
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Features
- Save money over time. Protection for less than 3 cents a day! No hidden electricity costs or annual battery replacements--ever! Plug-in alarms cost 5X more to own. DeNova Detect saves about $200 per alarm over 10 years.
- 100% Battery powered alarm easily mounts on wall, within 12 inches from ceiling and eliminates the need for cords required with plug-in alarms.
- Natural gas (methane) alarms should be installed in all rooms where a gas leak may occur, or a gas appliance is located. Easily install in kitchens, laundry rooms, and furnace areas, as well as near natural gas fireplaces.
- 10% LEL gas alarm threshold alerts you to emergenices much sooner with 11 minutes more escape time on average than a 25% LEL gas alarm threshold.
- Selective to natural gas (methane) and proven to be reisistant to amonia, acetone, ethanol, isopropyl alcohol, and other household chemicals.
- Battery-powered device enables installation close to ceiling where natural gas is more accurately detected, as natural gas is lighter than air and rises toward the ceiling.
- Voice alerts in both English and Spanish announce "Danger! Natural Gas Explosion Risk!" and instructions to "Evacuate! Then Call 911"
- ETL tested and listed to new UL 1484 safety standards including the low 10% level (LEL) Includes internal self-diagnostics. No calibration needed.
- Follow proper alarm placement to meet new NFPA 715 installation guidelines. 100% battery powered alarms can be simply installed within 12 inches from the ceilingeliminates need for the electrical outlet and power cord required with plug-in alarms.
- WARNING! DO NOT test alarm by performing a one-time gas release from a gas stove. This is VERY dangerous and not the intended way to test a natural gas alarm. Natural gas is lighter than air, so it rises to the ceiling first. Simply press the TEST button to ensure its working properly. Weve been producing gas alarms for 60+ years without fail, so you can trust DeNova Detect will perform in an emergency.
Brand: DeNova Detect
Style: Natural Gas Alarm
Power Source: 10 Year Battery-Powered
Item Weight: 0.4 Pounds
Alarm: Voice Alerts in English and Spanish
Manufacturer: NEW COSMOS ELECTRIC CO., LTD.
UPC:
Brand: DeNova Detect
Style: Natural Gas Alarm
Power Source: 10 Year Battery-Powered
Item Weight: 0.4 Pounds
Alarm: Voice Alerts in English and Spanish
Manufacturer: NEW COSMOS ELECTRIC CO., LTD.
UPC: 850030282040
Part Number: DD620NV
Item Weight: 6.4 ounces
Package Dimensions: 6.81 x 5.55 x 2.36 inches
Item model number: DD620NV
Batteries: 2 Lithium Metal batteries required. (included)
Item Package Quantity: 1
Batteries Included?: Yes
Batteries Required?: Yes
Battery Cell Type: Lithium Metal
Date First Available: November 10, 2023
Frequently asked questions
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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Item Package Quantity: 1
If you worry about your life, get one unit to save it
Reviewed in the United States on February 24, 2025 by Alfredo P.
Item Package Quantity: 1
It's never gone off so either we're about to explode our house or it works great!
Reviewed in the United States on February 12, 2025 by Stephanie K Magnus
Item Package Quantity: 1
Just installed this. Because it needs to be high,a battery replacement will be annoying, and a corded unit leaves an ugly extension cord running down to the outlet. This was expensive, but I'm hoping that it will be reliable!
Reviewed in the United States on November 9, 2024 by E. Gosselin
Item Package Quantity: 1
Easy to install, good instructions. Placed in rooms/areas with gas appliances (stove, fireplace, wall heater, furnace).
Reviewed in the United States on January 13, 2025 by Novemba
Item Package Quantity: 1
This appears to be a high-quality alarm. I tested the sound, and it is very loud. Easy to install hanging off a screw, which is included in the kit. I purchased extra to hand out to my family members.
Reviewed in the United States on December 22, 2023 by Alex
Item Package Quantity: 1
This natural gas detector is entirely battery powered. That means if you have a power outage it doesn't need a battery backup to work. It is already battery powered. The price tag might cause a little hesitation but this is a quality device. It provides voice alerts in English and Spanish and weighs less than half a pound. By the way, plug in devices that are similar in nature can cost many times more than this potential lifesaver. The manufacturer recommends the six natural gas is lighter than air, you place up near the ceiling where the gas is going to rise. That is good advice. I have tested this one and it works rapidly. Since there is no installation, and it is super portable, you can move it as often as you need to keep your family safe.
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Reviewed in the United States on October 22, 2024 by Patrick Brian O'Neill
Item Package Quantity: 1
This natural gas alarm looks sharp and very well-made. I tested it according to the instruction manual, and it responded as noted. I do not know much about this type of detector. What I did was turn on the oven without lighting it up, and I could clearly smell gas. I hovered the natural gas detector over the oven, but the detector stayed silent. Perplexed that something so well-made could fail so badly, I turned on the fan to air it out. I waited for a while and repeated the process with the same result. Puzzled, I did some research and found out that natural gas can be detected using the following technologies, which are not exclusive: 1. “Electrochemical. Electrochemical gas detectors work by allowing gases to diffuse through a porous membrane to an electrode where it is either chemically oxidized or reduced. The amount of current produced is determined by how much of the gas is oxidized at the electrode, indicating the concentration of the gas.” 2. “Natural gas is frequently detected using catalytic (Pellistor) or infrared (NDIR) sensors. Pellistor/Cat Bead sensors use temperature differences between two beads to detect a natural gas leak; whereas, infrared sensors use infrared light.” Searching for the technology DeNova uses to detect gas was in vain. I believe that the detector might need some time to detect, analyze, and then send out the alarm if necessary. By hovering the detector over the oven for a short period, I did not expose it to the gas long enough. Natural gas is lighter than air, so it rises up and permeates close to the ceiling. That is why the recommendation is to place the device “near ceiling where natural gas rise first” and “within 12 inches (0.3 meters) to the ceiling” where it can be immersed in the gas for a period longer than just a few seconds. This detector is made in Japan, which is known for designing good and reliable products. Searching the web shows that this detector receives good reviews, so I am going to give it a 5-star rating. Giving it a low rating will discourage people from buying it, and if gas in their houses leaks without anything to detect and alert them, there is a good chance they and their loved ones can die. If this detector works less than 100%, e.g., 40%, it is still 100 times better than having nothing. If they do not want this detector, at least research thoroughly and buy another natural gas leak detector. This is a true story that happened about a year ago. A woman I knew well asked me to go check on one of her apartment units. The tenant did not pay the rent, so she had to hire a lawyer to evict him. I came to that unit with two police officers, but the tenant had already left more than half a day earlier, based on the information from another tenant living in the unit below. Upon entering, I could smell a very strong odor of gas. One of the knobs in the top range was not turned off all the way. Although there was no way to know if that was an intentional act, it was definitely suspicious. If there was a natural gas detector there, it would sound the alarm and warn the other tenants living in the four-plex of this potentially lethal situation.
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Reviewed in the United States on March 20, 2024 by Charles D.
Item Package Quantity: 1
I have had gas detectors in the past that have been huge monstrosities, but this is a pleasant, unassuming device. It is important to follow the directions for installing the batteries. The natural instinct is to unwrap them, but in fact they are to remain in their plastic, and they are easy to plug in. I have not found any information in regard to what to do when the battery runs out. These are not standard store-bought batteries. The box and the description indicate a 10-year battery so I am very curious if that is accurate. The description also boasts saving $200 over the course of 10 years and that is impressive, however if the consumer needs to buy a new gas detector every 10 years because the battery is not replaceable, the savings are less impressive. I tested the device and it made the expected sounds and the expected lights did light up. I placed the detector on the wall in my kitchen near my gas range. To the best of my knowledge this is working as intended. Obviously the only way to really test it would be to allow gas to fill the house. The detector has been in place several weeks at this point, and has not gone off so either it’s working or it’s not, but I haven’t smelled any gas.
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Reviewed in the United States on April 12, 2024 by aj wall aj wall