ABB Busch-Wachter Professional 220 EIB Mode D'emploi page 27

Coverage Zone
The lens system with 4 ranges covers the zones (see Fig.):
– Distant (light grey)
– Close-up (grey)
All four coverage ranges are simultaneously active.
The maximum detection reach is approx. 16 m when
approaching the unit diagonally (with a mounting height of
approx.2.5 m).
(optimum)
oblique
approaches:
– Middle (medium grey)
– Rear field (dark grey)
GB