Will VEIU tie into an existing doorbell? Eques June 14, 2017 23:42 Updated VEIU does not have to tie into an existing doorbell. It works independently. Related articles What is the diameter of the doorbell (outside panel)? How is VEIU installed? How does the motion sensor work? Is it possible to just hardwire VEIU through the existing doorbell wires? After doing such, will this allow distant installation for the LCD monitor, let’s say putting it in the home office or kitchen instead? Comments 0 comments Please sign in to leave a comment.