Hunter Technical Support Document
Will I have to readdress my Wireless Rain Clik Transmitter and Wireless Rain Clik receiver together after initial installation?
FAQs, Troubleshooting, Video
There are some cases where you will need to readdress the sensor on the roof to the receiver mounted near the controller so they are on the same frequency. They are a matched set out of the box however after a power outage the receiver can lose its address.
On a new install Its always a good idea to check communication at the controller before installing the sensor in it's permanent location.