Door chime for business when entering suitable for larger places or high buildings. Motion Sensor Door Chime can be used as a welcome bell for shopping mall, store, home doorbell, burglar alarm, pet ...

Your doors may not magically slide open like on "Star Trek," but they can at least sound like it with ThinkGeek's motion-activated electronic door chime. Freelance writer Amanda C. Kooser covers ...

What is a door entry system? A door entry system is also known as an access control system. Entry door systems control admission to your premises for security purposes. They are put in place to ...