eBMS/IO is directly compatible with the legacy Tridium Vykon IO range of modules. We can supply all spare and replacement modules for this range. The eBMS/IO range of I/O modules are designed for use as local I/O or remote I/O connected via Modbus TCP & RS485 networks. eBMS/IO is a very well established range of IO and maybe familiar as Tridium Vykon IO modules.