@OvalPiston,

I will pass the feedback along to our team, however, I am inclined to believe that there may be a few obstacles that have to be overcome for a device like this to release.

 One, the satellite device does not receive the same type of power as the main unit, this is why the satellite box does not often have a neutral wire included. 

Secondly, the programming could be an absolute nightmare, as when one device would turn the light off, the other motion sensor would turn the light back on, thinking the dark to light was activity. 

  @OvalPiston,

I believe that the devices are PIR sensors, as most motion sensors are. This uses infrared reflections to see if there was movement in an area. While they are not supposed to respond to light changes, all PIR sensors can be triggered by things in an environment, such as light or a mirror, if it causes the IR reflections to be interrupted. This, however, is usually fixed with sensitivity controls.