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Enable and set the switch type of a rain sensor.
- Click the Use rain sensor check box to enable rain sensing.
- Leave the Normally open box checked if your sensor's switch is the normally open type otherwise un check the box. See the rain sensor's user guide for information about the switch type.
If you are using a Raspberry Pi and want to connect a Rain Sensor directly to the GPIO pins use pins 8 and 6 (ground).