| Fibre-optic unit SOE4-FO-L-HF2-1P-M8 552796 | Plug | PNP | 10-30 V DC | | €116.02/piece |
| Fibre-optic unit SOE4-FO-D-HF2-1NU-K 552802 | Cable | NPN | 10-30 V DC | | €205.84/piece |
| Fibre-optic unit SOE4-FO-L-HF2-1P-K 552795 | Cable | PNP | 10-30 V DC | | €116.02/piece |
| Fibre-optic unit SOE4-FO-D-HF2-1P-M8 552799 | Plug | PNP | 10-30 V DC | | €190.75/piece |
| Fibre-optic unit SOE4-FO-L-HF2-1N-M8 552798 | Plug | NPN | 10-30 V DC | | €119.49/piece |
| Fibre-optic unit SOE4-FO-D-HF2-1PU-K 552801 | Cable | PNP | 10-30 V DC | | €202.37/piece |
| Fibre-optic unit SOE4-FO-D-HF2-1N-M8 552800 | Plug | NPN | 10-30 V DC | | €194.19/piece |
| Fibre-optic unit SOE4-FO-L-HF2-1N-K 552797 | Cable | NPN | 10-30 V DC | | €119.49/piece |