Can you trust a $200 air quality monitor? [pdf] Posted by auton1 on Saturday November 17, 2018 @04:09PM from the conference2018.resnet.us dept. http://conference2018.resnet.us/data/energymeetings/presentations/RESNET2018_LBL_LowCostMonitors_walker.pdf ( 1 comment | 3 points | on HN )