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Update external-notification.mdx
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@ -31,6 +31,10 @@ Specifies whether the external circuit is triggered when the device's GPIO is lo
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Specifies the GPIO that your external circuit is attached to on the device.
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:::info
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on ESP32 based boards, GPIOs 34 to 39 are GPIs – input only pins. These pins don’t have internal pull-up or pull-down resistors. They can’t be used as outputs, so you can NOT use these pins as outputs.
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:::
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### How long monitored GPIO is triggered
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Specifies how long in milliseconds you would like your external circuit to be triggered.
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