The Tritech SeaHub Surface Interface Unit are software configurable to drive long lines with ARCNET or RS485 as required by the individual sensors and RS232, RS422 or TTL via multiplexer channels. The unit may be mains or DC powered if mains powered then a DC output is available to power connected equipment. If DC powered the output DC is a fused extension of the input supply. Front panel diagnostic LEDs show interface ports in use and their status. The Tritech SeaHub Surface Interface Unit is fully compatible with Tritech Seanet Pro software suite and is automatically recognised in Windows if Seanet Pro is installed.