The Fairloc S2F06Y-.... Series of precision gear and dial ... portion of the hub on one side. The resultant cantilevered clamping section has a tapped hole to accept a cap screw, which passes ...

On the display, there are two small buttons that are programmable for different devices. My Hub 2 is set to turn on my office lights, though you can set it to adjust just about any SwitchBot device.