CEL-MAR sp.j. company specialize in the designing and production ofcomprehensive solutions of the series data transmission devices(converters, separators, HUBs and other). We produce reliable andunusual solutions which take the liberty of integrate devices withdifferent interfaces of one industrial network. Interfaceconverters of RS232, RS485, RS422, current Loop (CL), fibre-optic(FO), ETHERNET build equipment layer of the network integration.However addressable converters, baud rate and protocols take theliberty of integration of devices working with different speeds fortransmission or protocols.