The TMB300 is a brdge between an IP network and basic serial link and/or binary ouptput signals. It allows to interface a network with virtually no hacking options.The product details are available at fp2218a1_TMB300_fr.
The TMB500 is a bridge between two IP networks with a protocol breach. It is well suited to low volume data transfer such a stime information. The product details are available at fp2219a1_TMB500_fr.