can I sub a bs2 for a bs2sx?

kingpinzs

I have the 123 robotics expermits for evil genius book and wanted to know if I could sub the bs2 for the sx verstion? Is it pin for pin compatible?

Thanks

kingpinzs

Never mind it took me a while but I found it here
http://marwww.in2p3.fr/~levansuu/projets_es2i/Parallax/parallax website/stamps/bs2sx.htm