After changing the batteries on my outside receiver for my SkyScan Atomic Clock (Model #86722), the clock would not show the outdoor temperature. This baffled me. After some searching, I found out that if you take out the batteries on the clock and put them back in, the clock and receiver will sync back together and the outdoor temperature will show again. This produced a another problem. The clock defaults by showing EST time and I lost the instructions for my clock.