Vintage Simmons Drums (UK) Users Group

Ok.....   there are now several sds1 eproms on ebay (ten I think). I 
just got a module a few weeks back and my question is:   

Do ALL simmons eproms work with the sds1 pad. The ebay ad states that 
these also work in the sds9 and "others".  Just wondering before I 
start bidding. Wouldn't want to win something I can't use.

thanks