The product line of SENA Technologies has the following product series:

LCT-100This converter converts RS232 to RS422/485
Nemo 10The NEMO10 is a small and cheap module  that can be used to make serial equipment ready for network usage.
Parani SeriesThis series makes use of the wireless bluetooth technology
PS SeriesThis is the professional series with more functionality as the Lite Series.  This series also contains WiFi wireless devices.
ProBee SeriesThis serie consists of USB, Serial and OEM Modules based on the ZigBee standard for small and long distances
Super SeriesThis series has the possibility for secure data communication.
STS SeriesThe STS (Secure Terminal Server) series is the top of the range serial communication server from SENA with up to 16 ports.