If you feel a little intimidated by all of this terminology you can either learn about it and be better equipped to manage its specification and installation - or you can allow unscrupulous vendors to sell to you whatever they like at an inappropriate cost.
ARC’s Specifying Security Technology course, which takes place from 21st to 25th July could be the answer to all your technology nightmares - where all of this technology, and its properties, will be made clear! See the website for more details.