Electrical specification
31
To use a switch that is normally open as a trigger source,
connect pins 1 and 4 to one contact, and pin 3 to the other.
Connect the screen to the switch body. Closing the switch raises
the input from 0 V to 2.5 V. To use a switch that is normally
closed, connect pin 1 to pin 3, the switch between pin 3 and pin
2, and the screen to the switch body. Opening the switch raises
the input from 0 V to 5 V.
Wiring for normally-open switch Wiring for normally-closed switch
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