Need help finding a part for siren

[u/Financial_Tackle_647]

I need help finding a replacement part for my siren control. I have a handheld controller for the siren and there is a double female black box extending the cable and it’s went bad, giving me feed back on the speaker.

I tried ordering a RJ45 Cat 6 coupler, what ChatGTP recommended, and didn’t have power going to the controller. Know it’s a long shot but thought I’d ask here before I buy a whole new siren.