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report a power failure. You can disable this power fail event via web
browser.
Pin assignment of DI/DO
2.1.4 Fitting the device, grounding
Install the system in a dry and clean area to protect the router to
get exposed with dirt.
Plug the connector to the power supply plug then turn on the power
supply.
Ground
The chassis is grounded via a separate ground nut (M3).
Use toothed locking washers for a good electrical connection.