BRACKET E-3 is part of the BRACKET E ceiling-and-wall mount distance holder.
The spacer increases the detector distance from the wall or ceiling surface to avoid obstacles. The number of spacers used depends on the mounting location and the size of the obstacle in the detector coverage area.
When using BRACKET E-3 elements, you must take into account e.g. stability (in the wind) and rigidity of the entire structure.
BRACKET E-3 is mounted on the BRACKET E-4 (GY) base.