Can the sensor hub/Bridge be externally powered and will it still work to monitor the contact/motion sensor? i.e: Not plugged in the back of a camera?
No, it must be plugged into the back of a Wyze cam. Please see the Wyze Sense Guide at support.wyze.com
Aside from power, what’s the technical relationship between the sense unit and the camera?
I believe that’s how it connects to the app interface and the internet using the camera as a piggy back. otherwise it might need a bigger processor to handle all requests, send them to the app, set up other cameras to record when needed and all the other magical things it does. basically just using what’s already in the cameras so they didn’t have to put all of that into the hub and have the redundancy.
The bridge communicates with the sensors at 915 MHz, but the bridge only communicates that with the Wyze network over the USB connector on the back of the camera.
So, if you power it independently you will never know if the contacts are open or closed. You will never get another device to react to that condition. You have effectively broken the link between the sensors and any status reports or actions.
Now, if you want to increase the range of the bridge, I believe you can do that by using a USB extender cable to separate the bridge from the camera (while still being plugged into the camera).
I assume an antenna/connection to WiFi.
Yeah I didn’t think it through Thanks.