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VII.
I/O Configuration
1. I/O Connection
a. Please connect the GND & DO pin to the external relay (buzzer) device.
Please connect the GND & DI pin to the external trigger device.
When no event occurs, DO output is 5V (DO and GND are disconnected).
When the camera detects event triggers the external alarm, DO output is
0V (DO and GND are connected).