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6. Click the OK button to confirm and start upgrade.
7. After upgrade, the NVR will restart automatically.
5.8 DIO Setup
The NVR can handle the digital input/relay output devices via AP-SIO20 network I/O module.
Digital input/alarm output devices are connected directly with AP-SIO20 network I/O module, and
digital input/alarm output signals are converted to Ethernet through AP-SIO20 network I/O
module.
DIO setup page