Yes the inexpesnive ones are limited, but they work for split times, lap times and general information. They way mine work today I can talk to the pits, but they can talk to me. Frankly that is fine. I don't have much to say anyway.
Joe Paluch
944 Spec #94 Gina Marie Paper Designs
Arizona Regional 944 Spec Director, National Rules Coordinator
2006 Az Champion - 944 Spec Racer Since 2002