You are very welcome. and Yes, it is very easy to fall for a fake monitor, as they make them look so real, but a simple test can verify their legitimacy. I have another monitor to review and tear-down next week, and that one is for sure going to be very interesting, as I myself am very intrigued by this one ;). There are a lot of great monitors on the market, and also a lot that is not, and I am just happy that I am able to help someone in their search for the monitor that will best suit their needs. Thanks for the comment and thoughts, they are much appreciated.

Do you mean CO2?. Electrochemical sensors are used mostly because they are more accurate, and yes they seem to have a shorter life span but that may depend on how often you use it. I do not use mine 24/7. I only use mine if I feel that the CO2 needs to be checked. There are two major drawbacks of NDIR sensors: interference and detection limit. The sensitivity of a NDIR sensor is the magnitude of the detector signal per unit Infrared (IR) intensity. Detection limit is a measure of the smallest concentration which can be determined with a specified precision or reproducibility. If you only use your CO2 meter when you think there may be a problem, then it may last for many many years to come, so just don't run it 24/7. These meters were not meant to run 24/7 in the first place, they are meant only for industrial use in factories and places of business, and the reason for Electrochemical is for better accuracy and detection limit. I keep mine in a case, and only bring it out when I need to use it just like you would any other tool, but then again - we will find out huh?. I hope this last more than 3 years with little use, but I guess I will find out. If you could give me a link to the video you are talking about, that would be great as I would find it interesting...

Well Ruudy, I have to thank you for bringing this to my attention. I have been doing more research on these electrochemical sensors, and yes they do have a shorter life span. The reason that electrochemical is better is because they are more accurate, but at a cost - shelf-life. I am still learning, so if I want accuracy, I may need to buy one of these every 2-3 years for use in videos, but for the typical person, I guess the NDIR would be a better choice because they last longer with the unfortunate loss in accuracy, but I guess also for the typical person, there is no need for pin-point accuracy anyhow. I am still learning as I go, but it is good to know about these electrochemical sensors, so that I don't push a product that has a shorter life-span even though it has better accuracy. I just say that you should take advantage of the better accuracy at least until this one dies, and then you can get one with the NDIR sensor that has a better life expectancy.

My top 3 at the moment would be TemTop, Hotkrem, AirKnight for Particulates, HCHO and TVOC and (Smart Sensor handheld meter for CO detection). AirKnight is coming out with an update to the 9 in 1 in a few months, so I would wait on the AirKnight until the update comes out. Being located near a railroad station, and being concerned about air quality, I would purchase an air purifier like the Levoit Core 300s, 300 or 200, and let it run 24/7. I have had my 300s for about a year, and it runs all the time, and works beautifully. I change the filter about every 6 months, but that depends on how dirty the air is, and it is easy enough to check the filter every month or so so see how the filter is changing in color due to contaminates in the air. I would also consider opening a window on the opposite side of the house to the railroad station, as most contaminates are going to be on the track side, so that side of the house will have more contaminates present allowing them to come in through windows on that side of the house. I understand that not all of the monitors I review/test are available in your country, so if there is a monitor available to you that you would like for me to check out, just let me know what monitors are available to you, and I will do my best to purchase a monitor to test and review. I am glad that I could help with these videos, and am hopeful that I have been able to help also with your questions.

@@Outside-In.Thank you very much!

@@wellmalysh3609 You are very welcome, and glad I could help 👍👍

Polyamides put off particles in the range of 5 to 10 microns in size, so you would need a monitor that registers PM10 and PM2.5. Poly-carbonates (according to SciCron Technologies and Naxtat.com) have no adverse human effects - However, certain sensitive individuals with respiratory impairments may be affected by exposure to components in the processing vapors, so for the vapors, you would need a monitor that also has a VOC sensor. As far as what I recommend... I truly do not have a great answer unfortunately any longer (for the time being)... The reason is that all the monitors that I have tested and reviewed to date, have either stopped working, or have stopped registering correctly. After much more research, I am finding that most monitors now have such poor quality control from the manufacturers, that it is being a hit and miss on even getting a device that works or works for very long, and that is why the comments/feedback on most devices have such a diverse difference of opinion on how good a product is. I (for the first time) am at such a loss for what to recommend any longer except for trying to find a lab quality device that the company will stand behind 100%. I have contacted companies that sell devices that cost in the hundreds or even thousands of dollars, and not one of them will send a device to me for test and review, and I do believe it is simply because Outside In is just way too small for their consideration - it is about making money, and the only channels that would be considered, would be a channels with 10's of thousands of subscribers - so that they can get the widest audience possible. That is unfortunate, but I do understand their reasoning. I am in contact with a couple other companies that are going to be talking to me next week about their monitors, but I am not sure how it will turn out. I truly wish I had the money to buy much more expensive monitors to test for durability and longevity, but unfortunately I do not. AirKnight is in development of a new monitor based upon my recommendations, but AirKnight told me yesterday that they are getting closer to a finish date, but don't want to jump the gun on a release due to the possibility of something going wrong to prolong it, and I for one appreciate and respect them for that. AirKnight is working very hard to create a monitor that will exceed that of most monitors in a budget price range, so we just need to let them take their time to get it right. I just found out also that another monitor that I thought would be a good fit for Outside In, has now started having critical issues after being on for a few days, so honestly LivingTheDream, I am at a total loss of words for how to give you any recommendation at all at this point in time. I cannot and will not recommend a product to anyone without my testing, reviewing and doing a tear-down to verify the contents. I hope I was able to say that without sounding rude LOL, but sometimes it is very difficult to put into text a sense of understanding and concern. I care very deeply about peoples safety, so it would be completely irresponsible of me to tell someone that I believe this or that product would work great for you - without first trying it out on myself first. The only recommendations that I can have at this moment are for a CO2 and CO monitor. Even the Hotkrem monitor that I was beginning to fall in love with, I just found out through further investigation (see my latest videos) - is garbage and cannot be trusted - simply because of a serious lack of quality control. Most companies are out to make their money, and the last thing on their mind is quality control. If there is a company out there that truly believes in their product and stands behind it 100%, and would like to have access to a channel that will be completely un-biased and 100% honest - then I am ready to help them get their product to the public, but so far I have had not takers unfortunately. I am so sorry that I could not be of more help, but I would not be able to sleep at night if I sacrificed your life just to give you a recommendation of something that I can't find a reason to believe in. One person will argue that their device works flawlessly, and then you will find 10 more people (with the same product) complaining that theirs don't work, or stopped working after a few days or weeks (I must say it truly is a lack of quality control that causes this indifference in most products that I have tested and reviewed) - so in the end (right now anyhow), your guess my friend is as good as mine. I am now hoping that the new AirKnight is going to truly be the best of the best - but that obviously remains to be seen... if anyone is reading this and knows of a great great quality monitor that Outside In can get behind, then please let me know, and I will do my best to get my hands on it for sure. Thanks LivingTheDream for your comment and question, I only wish I could have given a better answer to your question. I think from now on, I cannot do a video for any monitor at this point, until I have used it for at least a few months to verify that it would last more than a few moments LOL. Companies that are pushing out product with no care for safety or longevity, are making is difficult for good and honest companies to get their more expensive products seen.

@@Outside-In.thank you for your response, i hope that there will be an accurate and affordable multi function air monitor soon.

@@LivingTheDream77 Me too, will keep looking. 👍👍👍

NO, that is not normal for TVOC and HCHO, but I am also concerned that the CO2 is at 422 ppm before the test - too low of a number. What is the name of your CO2 meter?, I would like to check it out. Thanks Please watch my latest video, I go into detail about fake CO2 monitors and how to test them, while also testing a fake CO2 meter.

Sorry Rudy, I have been responding to so many comments today, that I keep forgetting who I am talking too, so I just came back and re-read your comment, and I noticed that you had mentioned that your TVOC and HCHO stays in the red even outside, and that is not normal at all, nor is 1780, so now I am wondering if I am right that your monitor could be either defective or not being quite honest with you. Could you tell me the name of your monitor so I can check it out for you?. Thanks

@@Outside-In. Hi Simon, the meter is a Yilofy, There are a lot of meters that look the same but this has a stepped case, maybe it has a fan in it. I will open it up if I decide to keep it I recieved the Hotkrim today and it seems to be working ok, will only know for sure, when I get my other meters I made a little video of the meters showing that one was bad, with the high TVOC and HCHO studio.kzfaq.infoPhbwH6ol_s4/edit I sent that faulty meter back

@@RuudyL Thanks for the update. I will have to check out that video, would be great to see what you are talking about. You will be happy with the Hotkrem. Thanks for the communication - it is much appreciated.

Interesting looking device. I just can't afford to do any more videos about air quality, the monitors are just too expensive. I have contacted a number of companies to send them to me for review, but Outside In is just not big enough to get companies' attention yet.

Great information Thanks

@@RuudyL You are very welcome, and thanks for the comment - much appreciated. 👍👍