Looking at replacing my existing video intercom with this (http://www.panasonic.com/middleeast/en/business/security/video-intercom/vl-sf70.html). The current system has the power hard wired inside the wall and takes 230v directly but this unit takes 24 V DC, 0.5A. How would an electrician wire this up or is it not an option and i need to find something that takes 230v directly?
