Follow this tutorial to find out how to connect photocells to a CA2B9 electronic board.
If you carry out a connection of photocells while the card is powered up, remember to carry out an electrical restart of the card once the terminal block has been repositioned on the card.
Disconnect the transformer for 30 seconds and then reconnect it.
When the card is electrically restarted, it will light up all its red LEDs and then switch them off if the photocells are correctly recognized.
