OCV51/D – 29 x 40 x 15 mm block type – Diffuse type versions
OCV51/C – 29 x 40 x 15 mm block type – Reflex type with rear reflector
OCV51/B – P – 29 x 40 x 15 mm block type – Beam type ( Sender + Receiver )
OCV52/D – 40 x 29 x 15 mm block type – Diffuse type versions
OCV52/C – 40 x 29 x 15 mm block type – Reflex type with rear reflector
OCV52/B – P – 40 x 29 x 15 mm block type – Beam type ( Sender + Receiver )
