⑥ indicating pin correctly inserted LL3 fiber

⑦ LED indicator orange, lights up when switching output is active

⑧ LED signal strength indicator green, lights up, when light received< 0.9 or >1.1 (switching threshold = 1)

⑨ Sensitivity scale 270°

⑩ Sensitivity control ( 10 revolutions)

⑪ OFF delay selector switch: “OFF DLY” (on)/“OFF” (off), 40 ms fixed

⑫ Selector switch: "L.ON" ( light switching) /"D.ON" ( dark switching)