HK serial number prefix showing up !

[brucesemple]

Since this custom integration is working so nicely with the latest releases of ESPHome and HA .. I ordered a second RD200 Unit. It's reporting the same firmware version 3.01 on the screen (as my FR:HA unit) .. but it looks like they have gone to the next prefix in their serial numbers .. I got a HK (FR:HK) unit. I'm in the US. I see your instructions on what source files need to be updated, however I don't know how to load an updated version of this integration into HA for a test.