Configuration Of The Relay Boards - Conrad Electronic 197720 Notice D'emploi

e) Configuration of the relay boards
If you want to operate more than one board (see figure 1, top line), the jumper JP1 must be
plugged on position 1-2 for the last board.
With all other boards, the jumper JP1 must be plugged on position 2-3.
If only one single relay board is used (see figure 1, bottom line), the jumper JP1 must also be
plugged on 1-2 (as this is automatically the last board).
Figure 1
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