Legic SM100-S reader

I have a Legic SM100-S reader which came from a Kaba Benzing Bedanet 9850 terminal. Does anybody have any information on how this could be connected to the Arduino? I cannot find any pin-outs but I think it is a serial device.

from - http://www.sourcesecurity.com/technical-details/access-control/access-control-systems-and-kits.2/access-control-systems-and-kits/legic-sm100-s.html Please note: this is a discontinued product.

This is the manufacturers site - http://www.legic.com/en/home.html - you may contact them.