CYT-133 is a serial to TCP/IP interface media converter and a multi-DIO design controller integrated with Web server is suitable for any industrial automation devices. In some applications, the user can use another downstream 1 ~ 9 pieces of BF-51 (3+3 DI/O extender) to wider a site with up to 30 sets of DIO interfaces. CYT-133SC and BF-51 solution is a ready-to-go solution, and this application may save us deployment and installation costs.