This is a collaborative effort between Orbit and Apple, there’s coding on both sides to make this work. So far, this is the message Apple has authorized us to give you.
“Dear B-hyve user,
Thank you for your inquiry regarding the B-hyve integration with HomeKit. We are excited to let you know that the B-hyve integration with HomeKit is actively being worked on and will be coming soon! This will allow you to control your B-hyve products using the Home app and Siri on your iPhone, iPad, Apple Watch and HomePod. A follow-up announcement will be posted when the integration is completed. You can also check our website for updates regarding this exciting announcement. http://bhyve.orbitonline.com
The B-hyve Team”