Bests & Worsts Reviews from Amazon

After getting this, I installed new batteries in each unit. The main unit came to life but the outside unit only blinked once. The display showed a outside temp of 33 degrees but it was sitting on my table beside the other unit showing 68 degrees. I took the batteries out and put them back in again multiple times. I pushed the reset buttons on both units multiple times. Nothing worked for me. I let things sit for about a week and tried things again but got the same results. Getting ready to send it back I noticed the phone number on the package and thought,OK, one last time. The guy I spoke to was an American, woo hoo! He had me take all the batteries out and let the units sit awhile to reset. Then I installed just the outdoor sensor batteries and waited. I was told the unit should blink every minute and after about a minute it blinked again. Next he said to install the batteries in the main unit and set them beside each other to get a connection. Very quickly the units found each other and the temps where displayed correctly. He told me to leave them beside each other a while to help establish a good connection, about 20 minutes or so. It's been about a week and these have worked flawlessly since then. The batteries still show full. We will see if the batteries hold up but right now I'm very happy with them.