Home Super4 USB Relay Module Super4 USB Linux Software Super4 Windows Software Solid State Relay control   Top16 Input-Output Module     Wireless-8 Input-Output Module  Embedded Industrial PCs Distributors                               Welcome to tctec , we manufacture : Reliable, USB input and output solutions. Relay modules 3 X super4 USB Relay modules   What you get with all TCTEC Products: Prompt application support (24 hour email reply). 12 month hardware replacement warranty.   Please contact: sales - sales @ emx.net.au website - admin @ emx.net.au   All rights reserved 2008 tctec Pty Ltd