RS485 Connector for SEN0642

What is the weatherproof connector used on this product series? 

I see that the sensors do come with an adapter cable but if I want to install this far away from my Arduino I need the cabling to be weatherproof all the way down into my IP rated enclosure so I can't just solder a longer cable onto the adapter. I would like to find the exact connector that is used on the adapter and put that onto my own (longer) cable so it would be a nice and clean installation.

Or is it possible to open the sensor and just wire a longer cable directly through the cable gland on the sensor itself?