No hay artículos en el carro
No hay artículos en el carroMario M.
Comentado en los Estados Unidos el 5 de marzo de 2025
It works well and has the features I wanted. Can't speak for the accuracy of data but it often disagrees with a walmart temp/humidity sensor... no idea which one is more correct.I would honestly give it five stars if the battery duration was longer and had better power management. For example, when connected you have to have the screen on continually so you can't do graph monitoring for long periods of time without the screen constantly shining on.Other than that is a good device. I wish I had some high accuracy equipment to use for calibration and verification of data, but it seems to work fine.
Customer
Comentado en Canadá el 16 de febrero de 2025
Update - it helped us find a problem. It reacts to off gassing and I'm grateful for finding it.It seems like it works but I am no expert. We tried it in the car on a 4 hour drive. It responded to changes such as a transport truck exhaust and opening windows. It is easy to interpret (if I am doing it right) bc it has a simple arrow that points to good. It doesn't seem to specify sewer gas detection but several different toxins are specified. Battery isn't super long.
George Georgiu
Comentado en los Estados Unidos el 13 de noviembre de 2024
Very good device. I test it and It gives good information about air quality! Good price.Requares a lot of testing and pacience!
D.C.
Comentado en los Estados Unidos el 1 de septiembre de 2024
There are SO MANY choices for these air sensors, it's mind boggling and hard to decide.The last brand I tried was useless, ... the display was a fixed number, might as well have been a table decoration paper weight. Had to send it back.But THIS brand is Phenomenal!It checks for 5 types of substances, and has worked perfectly in my tests. The only one I haven't checked yet is formaldehyde, but considering how well it has performed in the other 4 tests, I suspect it will be satisfactory on that one also. UPDATED: I was able to check this 5th test factor and as expected it worked!The overall air quality gauge is a nice bonus as well!It should be noted that there is another review that has done extensive piecemeal tests on the 5 measurements this takes, and that some of them may be approximated due to the way this device is designed. This is good information, indicating that other sensors are available that are more accurate for specific testing, although in many cases this one should be useful for amateur purposes, and other sensors will likely be needed if used for professional purposes.For instance, I was able to to make it go out of range momentarily by exposing the device to fragrance infused hand sanitizer. I must say though, that I'd rather have a device like this which is sensitive and detects substances, than one which does not alert the user at all, and from what I've seen, it is very good with most specific substances as well. It even detected a large increase in particulate matter from smokey air that drifted though the neighborhood from forest fires several dozen miles away.I really love this unit! Here are the range of readings it gives me rather consistently when the air is normal:InsidePM2.5 = 7HCHO = .03TVOC = .06CO = 1CO2 = 600OutdoorsPM2.5 = 9HCHO = .02TVOC = ZEROCO = ZEROCO2 = 400
Kevin
Comentado en Canadá el 27 de noviembre de 2023
Be aware there is a preconditioning cycle every time you plug it in, or turn it on. This is normal.There is no calibration certificate of any type.Out of the box, in outside fresh air it indicated serious conditions, which was not the case. High TVOC, AND high CO2. There is a feature to recalibrate TVOC, in fresh air, and this improved the reading to low outdoors, and reasonable inside. Testing the second day indicated the CO2 in a closer to expected range. 480 outside 950 inside, I can accept this as useable.When set to off and plugged into charge, it turns on and stays that way until cord removed, likely increasing charge time. If you are planning to use it as soon as charged enough, switch it on before unplugging and it will not go through preconditioning again.Tried to run an 8 hour trend but battery did not last, would need to be plugged in for that. Cord is short but standard, so you can get a longer one if needed.
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