I have a Raynor garage door opener with a 500RGD Receiver on the wall. I've seen posts on here showing how you can program a new remote which I already did and was successful. However, the previous renter never gave back the remotes he had so I am afraid they will come back when I am not home and get into my garage. I would like to know hot to CLEAR all the codes from the receiver so that the previous renter cannot use the remote they kept to open the garage. I cannot find any instruction on how to do this. Any help is appreciated.
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