FTP will be better and SFTP will be best, but things always differs. Theoratically you should get SFTP but practically you can go even on UTP, reasons??
Because you are not laying it beside HT lines i.e 440v or above.
You are not passing big speeds like 50Mbps or more.
So if you are going to use UTP and just passing 4Mbps it should work perfectly. Distance matters alot but if you get original cable 23AWG standard compliant even UTP it will work great for you.
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