Product review (4 stars): Works as advertised however setup/activation needs some work
Since Im anal about researching items before I buy them, I researched the AcuRite and sensors before purchasing. I wanted to monitor the indoor temperature in the house while I am out. After reviewing customer responses, I put batteries in the sensors before starting any configuration. The setup went well and I think having the sensors enabled helped. I agree with customers that instructions are vague. I was waiting for downloads/updates on the unit but could tell if they were done according to AcuRites instructions. After waiting 2 hours I assumed updates were done (lights blinking/solid on their instructions were no help determining if finished).

The Hub found all the sensors however as another customer commented, you don't know which one to use. I wanted one in the basement, one in the main house and one outside. Took me a few hours to figure out which temperature was related to that sensor. I did have to do a reset a few times for the sensors to show the actual reading. Since a few were off, I tried to adjust (calibrate) on the web site. It never took. I deleted those and added them again (removed batteries before) with the calibration I wanted. They then displayed correctly.
All is working now and thru a few adjustments mentioned above it is working. I also previously had an AcuRite 5 in 1 outdoor unit and it found that as well. So now I can see all the house including the outdoor 5 in 1 unit.

Considering all the other options out on the market, this seems to be working for me. I hope not to experience failure in the system in a few months like others have reported. Thus far the unit is working as I wanted and I can view this from the downloaded app on my phone and tablet.