You can purchase the following interface modules and insert them into the relevant slots on your NS-series Sensor.
8-port SFP/SFP+ 1/10 Gigabit interface module
4-port 1/10 Gigabit fiber interface module with built-in fail open
6-port RJ45 10/100/1000 Mbps Ethernet interface module with built-in fail open
4-port RJ45 100/1000/10000 Mbps Ethernet interface module with built-in fail open
Remove the module from its protective packaging.
Grip the sides of the module with your thumb and fore-finger and insert the module into the slot.

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Drive in the screws fixed on the sides of the module to attach it to the Sensor.