BG171751381
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Eric 10/12/2021
This device does not give reliable results. See the attached image. It would be better to buy a more accurate device. Also there's a calibration button, but it's not clear when/how we should use it. The instructions simply say "Users need to operate cautiously". What does that mean? Like I'm supposed to press the button very slowly and carefully.
HCHO/TVOC/PM2.5/PM10 Tester Real Time Data Monitoring Multifunctional Air Quality Monitor Gas Analyzer
23,98€
6
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Eric 10/12/2021
The device is good, and gives more reliable data than some of the other cheaper devices. The software user-interface (as always) is clunky and has spelling mistakes, but the functionality is good. There is an included alarm for Ozone(O3). I wish there were alarms for the other measurements also. History can be viewed from within the device, and it's limited to 10 samples of 10 minutes (100 minute total history). It's difficult to view the history graphs because of the y-scales. There is a calibration feature, but the explanation is not very clear. The USB cable provided was defective. Overall, good device, bad software.
PM2.5 O₃ Ozone TVOC Air Quality Tester USB Instrument 2.8 LCD Screen Carbon Dioxide Formaldehyde Dust Haze Meter
109,78€
0
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PM2.5 O₃ Ozone TVOC Air Quality Tester USB Instrument 2.8 LCD Screen Carbon Dioxide Formaldehyde Dust Haze Meter
109,78€

Q: how many days of data history is saved? thanks

Asked by BG104549491 on 2020-10-12 03:29:09

BG171751381 From what I can tell, the "history" feature is simply an on-device 100-minute history view.

2021-12-10 04:38:48 Helpful (0)
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