Home » Products » OPTA – PROGRAMMABLE Programmable Logic Relays (PLRs) with 8 input and 4 output relays Product Description Brand : Finder Model : OPTA Programmable Logic Relays (PLRs) with 8 input and 4 output relays Exhibitor Info ND ELECTRIC CO., LTD. Booth No : H7-H8 Website : www.ndelectric.co.th ND ELECTRIC CO., LTD. website