TopTes Guard-756 O2-monitor, draagbare zuurstofdetector, 0,5 s reactie, oplaadbaar, met trillings-, licht- en geluidsalarmen, stof- en explosiebestendig, voor werk en thuis

操作は結構簡単です説明書も日本語対応です単純な仕組みなので、初心者でも問題ないと思いますただ、ペットの酸素室の濃度を測るために買ったが、３０％までしか測定ができない。うーーーん、これは完全に自分の確認ミスですが、せめて５０％くらいまで測定出来たら最高なんだろうなぁとなので、ペットの酸素室の酸素濃度測定には適してませんのでご注意を

Use it when transporting cylinders - seems to have a fast response (breathing on it for example), nice loud alarm. Battery life is great, seems to last a long time!

Seems to work well, although my test was really just a lot of breath on it (carbon dioxide in your breath). That makes it alarm like crazy. It seems durable as well. Of course, all of these meters wear out in about a year anyway, but that's not the fault of the product, and the price is right compared to the Honeywell or similar. Overall, I'd say it was a great option, but if you're doing dangerous things like going into a mine, you might want to spring for a couple from different manufacturers.

Very easy to operate with large numbers.

The O2 sensor appears to work okay, but the product would have been so much better had they included a description of the attachable adaptor. It's not mentioned at all, and the QR code takes one to the wrong site, so additional info is not available. The time adjustment is tedious at best and took several tries before it would remember the correctly set date. Therefore, it's going back to Amazon and will be replaced by an O2 sensor that's properly documented. Otherwise, it could have been rated at 4 stars instead of two.