A security gate (also known as a metal detector gate) is a detection device used to check whether individuals are carrying metal objects. It is primarily used to detect concealed metal items on a person's body, such as firearms and prohibited weapons. Security gates work on the principle of electromagnetic induction. When a person passes through the gate, the sensors inside detect changes in the electromagnetic field caused by metal objects, triggering an alarm and indicating the location of the metal object.

        It can quickly and effectively detect all kinds of precious metals such as copper, tin, zinc and other precious metals that are hidden in the human body through the control dao,Radiation is implemented in accordance with EN50081-1 standard.