I ordered on Jaunary 19, 2022 and received the ordered item on February 1, 2022. It took only 12 days after I placed my order. As for the product, it seems to be accurate based on the other measurement instruments that I have. The built-in battery lasts more or less 8 hours after charging fully. The colorful indicators and alarm sound are very nice. I really liked the products. Probably, I will order a few more this air monitor again.

The device works, the instruction without the Russian language (it is not necessary I think), one button on/off. According to the norms of information on the internet is full. On accuracy, it is not yet clear, let's see in the process of operation

This is a tinplate, 3 months went to Odessa. Mist Express is no longer the same. Ali ended all time, the order closed, but I waited. The device itself works, it is not yet clear what shows)) there are no complaints to the seller)

I did not understand, but I'm interested. I put my nose in the device, the guy was up for 5000, and from the CO2 cylinder he presented, just over 4000 overhauled, now I realized that the gas from the the the

The seller is good. But I did not like it myself Goods. When you increase the CO2, the sensor flares 1 time and does not make any more signals. In my opinion it is not safe.