The TERRA-IO is a TERRACOM device without audio inputs & outputs. Although it can be used in Audio applications where you will need a lot of analog I/O, the input contacts and the relay outputs will be useful in industrial & home automation applications or when you need to monitor contact closures. The serial link can be used for IP tunneling between a PC and a device like a sensor for tele monitoring. Thanks to the SNMP, the management is adapted to big systems.