HOME › Forums › Input/Output › EZIOxx › Can I use 3 dry contact switches with the EZIO2X4? › Reply To: Can I use 3 dry contact switches with the EZIO2X4?
You can use inputs I2 and I3 with pull-up resistors to provide the needed potential for the dry switches to be “seen” by the EZIO2X4. Please use a 4.7K resistor for each input to the terminal marked +5V. Then you can use a dry contact between each input and GND.
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