![Opto Board Set - Receiver / Transmitter (Williams) Opto Board Set - Receiver / Transmitter (Williams)](https://www.pinball.center/6881-large_default/opto-board-set---receiver--transmitter-williams.jpg)
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Opto Board Set - Receiver / Transmitter for Williams
Ref. Williams Part No.: A-16908 (Transmitter, green), A-16909 (Receiver, blue)
Ref-No. A-16908:
A-14231
A-16908
13154-02
13155-02
Ref-No. A-16909:
A-14232
A-16909
13154-04
13155-04