desipher

>>So I just got a new security system installed today. The DVR belongs to the Securico brand and has 8- Channels. The issue is that even though I was promised that I will be able to connect my DVR to my router wirelessly the with the help of a wifi dongle, the surveillance guy (who installed the security system) backed out saying a wired connection will be needed which is not possible in my case. >>TL;DR :So can I get a wifi dongle and install it in my DVR to connect it to my internet? If so then how will I know which dongle is compatible and which is not?