TS MEI AND TS H

HI!
What is the difference between TS MEI products , TS 2 and TS H family?

I would like to know what family of products is better for permanent broadcasting (24 h) of ip packets from a remote device .

Any one of the three would work. The main differences are that MEI units have the Multi-Electrical Interface (232/422/485), H stands for Hardened in that it has extended temperature range (but is still MEI), and the TS is 232 only.