The ESD contain a spawn point without teleport effect for NPCs which is combined with various devices. The use is analogue to a normal NPC spawner.
NOTE Use only recommended for bases and space bases. When used on Captial Vessels, the spawn area MUST be delimited so that it cannot be activated by the player from the outside, e.g. when boarding an unmanoeuvrable NPC vessel.
IMPORTANT Like any other spawners, the ESD do NOT work on structures with a player core!