Still not finding what you need in the Basic Systems or Advanced Systems? Then look no further! The Expert Systems are bound to provide the functionality and feature sets you're looking for in wireless intercom!
Finally, the Expert Systems: Comprehensive, High Capacity, Extensible, Scalable
This video talks about the wireless products withing the EXPERT category. Learn about the HME PRO850, the Tempest2400, the Tempest900 and the CellCom/FreeSpeak product lines.