If you worry about your life, get one unit to save it

It's never gone off so either we're about to explode our house or it works great!

Easy to install, good instructions. Placed in rooms/areas with gas appliances (stove, fireplace, wall heater, furnace).

Most home have smoke alarms and carbon monoxide alarms installed. But, if your house has a gay range/oven/cooktop, dryer, or furnace, I recommend getting at least one of these alarms to help save your family in the event of a gas leak. This alarm is easy to install. It comes with the two required 3 volt lithium batteries (CR17500EP). They are not connected when they arrive. Just slide the clear plastic cover off the back, and pop out the batteries. They are wrapped in plastic. Leave the plastic on. You then just pop a connector from the battery to the alarm (the connector only goes in one way). Put the batteries back in place and put the cover back on). The alarm should now be armed. Press the test button on the front and it will beep. Then you install this on a wall 12" down from the ceiling (and 5' over from a gas range). It comes with a wall anchor and screw to use that the alarm will just hang from. Natural gas rises so having an alarm near the ceiling may give you more time to escape if you get a leak. Ideally, if you have more than one gas appliance, you should an alarm for each.If you were to get a gas leak, natural gas can incapacitate you and cause death within minutes. This alarm can give you a good chance to get out of your house unharmed. Once you are out, use your cell to call 911. Don't call from inside. You can cause a spark which could ignite the gas and result in an explosion.The alarm is supposed to last ten years but you should check the alarm on a regular basis by pressing the test button. The instructions say to test weekly but I doubt we will be dutiful in that suggestion. We have very high ceilings and reaching the alarm to press the test button will require hauling a ladder from the garage to the kitchen and back.There is a low battery alarm that sounds and tells you if the batteries lose power and need replacing. Amazon sells two packs of these batteries with the plugs in place. When the alarm has reached the end of its service life, there is also an alarm that sounds tell you to replace the alarm.If you have one or more natural gas appliances, please consider adding this alarm to your arsenal of protection and make your home safer for you and your family.

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.

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!

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.

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.