Just Buy it By Vanore on 9/13/13
Vanore would recommend this product to a friend
If you are 2nd guessing the PM2, don't. Just buy it
The conductivity reading from this module is dead accurate, and has a very fast refresh interval. This is a must have for the "control freak" the conductivity data graphs alone will shock the non ATO system keepers. Which now happens to be next on my list.