We have an audio door entry system but want to be able to see who is at the entrance, how easy would it be to upgrade?

Usually we can upgrade an existing door entry system from audio to video using the existing cable infrastructure in place. Wherever possible, we look to use as many parts of your existing system. This speeds up the installation and reduces the cost to you. Please talk to us about your requirements and let us know which equipment you currently have installed, if you know. We may also be able to identify it from photographs.