Passive feed-through bridge, can be plugged in instead of relay or optocoupler, bridges terminal poi 12.74 € without VAT
CAT 5-S/UTP cable (J-02YS(ST)C HP 2 x 2 x 24 AWG), heavy-duty installation cable, 2 x 2 x 0.22 mmІ, 16.03 € without VAT
