Dear All, here is another thing that was for long on my mind: Extend the range of the IR light based one-way communication for controlling the PF receiver without line-of-sight. There are many ways to do this; one would be to install IR repeaters all over the place; this has been realized by others in many different ways. An alternative is to access the PF receiver via radio frequency (RF). This again was done over and over again – my solution is a little minimalistic and simple but works v