This is an evaluation download of WIN-911/SMS, which is fully functional for 30 days. Should you need to extend your evaluation period or purchase a license contact WIN-911. If you have already purchased WIN-911/SMS, see the link below for licensing instructions. WIN-911/SMS is only available for customers outside of North America. For sales information contact Specter Instruments at 512-326-1011 or at email@example.com.