Hi @MichaelMell, thanks for reaching out to us here. @Frustratedddd is correct, that is the 3rd Generation.
The 3rd Generation can be installed both wired, on the wall and wired to the Heat Link or wireless, on a stand and plugged in to power using a power adapter. The battery for it is internal, not replaceable. It will connect wireless to the Heat Link but you still need to have it plugged in to power constantly.
You can have a look here at our installation guide. We have both the wired and wireless installation instructions and examples.
