Hi everyone,
First: Yes, I known that hnap protocol is insecure but maybe you still have one of those devices hanging around.
Now the news: I have developed an integration for those devices: GitHub - ldotlopez/ha-hnap-device: Home Assistant component for HNAP devices
This posts is a request for testing. I only have acces to a motion sensor (DCH-S150) and to Siren Device (DCH-S220) and some reports of working DLINK-822 router. If you have one of those devices laying in a drawer test my integration please.
Also, if have debuging skills you can test the underlaying library: GitHub - ldotlopez/python-hnap: Generic HNAP client and specialized clients for motion sensorts, sirens, routers, water detectors and more. which comes with a command line interface to read and call HNAP methods from the devices.
Thanks!