Product review (2 stars): Won't stay synced
I was optimistic about this product based on some of the other reviews, but have had quite a bit of trouble getting the display to stay synced with the sensor.  We put the display in our second level kitchen near a window at the back of the house, and the sensor under the deck behind the house, on the first level. The two will not stay synced for more than a day or two. I've reset them several times, and moved the sensor closer and closer until it was mounted right outside the window where the display is, but shielded from sun and rain.... still would not stay synced for more than two days. We've since given up on the sensor and just keep the display in our child's room to monitor indoor temperature and humidity. I will most likely look at other models/brands in the future.