Audio and video
entry systems are a very good way of dealing with unwanted visitors
without having to open the door, or to greet bona fide visitors and
let them in at the touch of a button. A video system will allow the
user to visually verify any visitors. All of the systems are compatible
with card or keypad access, automatic gates and barriers. The video
system may also be used in conjunction with a digital recorder, effectively
giving the user a picture of anyone who approaches the door. For larger
systems the panel at the front door can be connected to a telephone
line and make use of users standard telephone. This system will eliminate
all unsightly and costly wiring and will allow the use of cordless telephones.