thanks for the input. Is it mentioned in a manual or guide somewhere? The reason for asking this is if this is for a connection with Masterlink or Powerlink?
I have linked to a PeterPan thread before that had the following note under a post about BL3500 and Wireless 1 – perhaps this accounts for the Option 0 setting (when using the first version of Wireless 1):
NOTE
The combination Wierless 1, version no. 1780 and BeoLab 3500 version no. 1601 must not be connected to a separate IR-Sensor, here the IR sensor that is built into BeoLab 3500 works.
Installation of a separate IR-Sensor therefore only applies to the first version of Wireless 1.
Here’s the thread (I used google translate – 3 Mar post refers): https://www.hifi4all.dk/forum/forum_posts.asp?TID=20679&PN=1&TPN=149#top