It is a receiver / converter ArtNet-DMX and ArtNet nodes, this, is able to interpret information from a DMX frame sent by the network and make it DMX information to control devices such as spotlights, moving heads, etc.
Its configuration is simple, just selecting with the rotary wheel the same number that is selected in the transmitter (LM 3E) to establish both communication and send out / receive the same DMX universe. The connection possibilities are huge, whether in a facility that needs to send a single universe from one location to another, send multiple universes, or even send a single universe to two different areas, using one transmitter and two receivers.
LM 3R2 is a ArtNet node with two DMX universes (1024 channels), is fully compatible with other devices, you can receive the two universes either by two emitters LM 3E or from a multiverse console via Artnet. Configuration will set which universe is the first, automatically, setting the following universe as the second to control.