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If you have external devices such as sensors and alarms, make the connection from the general
I/O terminal block.
Power and I/O cable terminal
+3V3
DO
D1
GND
General I/O Terminal Block
Power Cord Socket (Black)
Microphone In (Pink)
Audio Out (Green)
+3V3: Power, 3.3V DC
DO: Digital Output
D I: Digital Input
GND: Ground
