BLACKBOARD

I have two main inventions in my entry 1-first one is a sliding door ,it design to cover devises in out-door area to protect it from sun light and weather conditions also can be very good at shock loads , this door dose not required both hands to open it then use you card then closed it , NO it just required one hand because it has a handle which can push then insert number and no one will forget the door open because there is a return spring, anyway this door optional for in-door devises 2-second point is mounting , this dives will use stander mounting bracket and three heading screws also there are - two condition clear lights - LCD to make sure of your inputs -functions key for programming