Product description "Kenton Electronics - LNDX MIDI Line Driver Pro"
Kenton’s LNDX MIDI Line Driver Pro is a MIDI extender capable of sending MIDI data over long distances.
The LNDX comes as a main and secondary pair that extends MIDI beyond its 15 meter specification using a CAT5 (ethernet cable) to a whopping 500 meters! The CAT5 cable ensures a low degree of noise over extended ranges. Compared to your usual MIDI connection this is vastly more.
CAT5e cable is recommended: CAT5 cable will limit the transmission length to 100m. CAT5 / CAT5e cable is not included.
The CAT5 cable from an LNDR main unit should only be connected to an LNDR secondary unit, not to another main unit, and NEVER to any other device, even if it has a similar connector. (e.g. Ethernet).
Please refer to manual for further info.