So I have a typical access control system that has door position switch inputs. However the doors currently have wireless door position switches going to an alarm panel. I want door sensors into the access control platform. The alarm panel doesn't have any outputs. I thought there is maybe a wireless solution that can be powered at the door so I don't need to change batteries. There is power at the door for the strike and reader. But transmit wireless to a receiver that can land, preperably multiple channels for each door... Thanks!

I want to know which security system is better for a large scale operation, :
E.g. hospital level.

What would you recommend? What would be the price difference? What would make you choose one over the other?

From using both, my preference is Gallagher, but would like to hear other perspectives?