If you have observed carefully, you will find that there are many kind and types of walk through metal detectors around us. When we finish our shopping at a supermarket we have to walk out of the exit through the walk through detector.
It is necessary to install walk through security metal detectors in public places like supermarkets, hotel, and many other public place in order to create a safety atmosphere. Usually the walk through metal can explore certain contraband goods that can bring danger to people, such as the handgun, knives. Besides it is also a method to prevent the thief from stealing goods from the supermarkets and reduce the loss of the owner of the super market.
And www.detectorall.com is a website and you will find that are kinds of walk through metal detector for sale at it. You can believe in it, and you will be satisfied with its products.