Keith Saunders:

The Lutron Grafik Eye is a very good product and provided you buy the B&O version it will also work with the Beo4.

They are certainly a good purchase, not cheap, but well made and have facilities well beyond most people's needs

I have a 6-zone Grafik Eye for B&O in satin nickel and black installed since three years ago.  An excellent purchase, altough it was very hard to source in the US as you are only supposed to buy it from B&O dealers yet my B&O dealer would not sell it to me —they would only install as part of a large re-do with a significant B&O purchase.  If anyone is interested, get the B&O exact model numbers and start calling Lutron dealers, preferably the large commercial ones who do hotels and retail.  One of them might "accidentally" place the order as they did with mine.

An excellent top notch product designed by David Lewis, I understand, in the 1990s, so it perfectly matches B&O stuff from the same era, right there, sitting pretty on the wall.

Downside alert: you must aim the Beo4 straight at the Grafik Eye.  Which has resulted in me inadvertently aiming my Beo4s at the B&O stuff, on occasion.