Metal detectors are devices that use electromagnetic fields to detect and signal the presence of metallic or ferromagnetic objects. Metal detectors vary in their effective operating ranges and the amounts and types of metals necessary to generate a signal. They may be fixed, as in the familiar airport walk-through detectors, or hand-held and portable. Uses include sport (finding coins, jewellery and artefacts), prospecting, industrial and security.

Different metals have different resistance levels to electricity. Also some conduct electricity better than others. Copper, for example, is an excellent conductor of electricity. Lead is a poor conductor. So the resistance to conducting electricity affects the magnetic field as does the depth of the article. The deeper it is the longer it takes to affect the magnetic field.

• A wide range of user selectable sensitivity settings;
• Detection of conventional and non-conventional weapons;
• Increased throughput;
• High discrimination of personal metal objects;
• Increased immunity against outside interferences;
• High reliability and durability.

Handheld Metal Detector

• Well in design, rustproof, durable and can resist external destroy.
• Self-inspection and alarm.
• Clutch transmission mechanical system, durable, no noise and long life
• Easily integrated with any type of readers such as IC, ID, bar code and even magnetic card
• Bi-directional passing or single way passing.
• Adjustable normally open or normally closed, in order to meet the requirements of the different venues
• Arm close delay function, after a valid pass, arms close in 10 seconds. (adjustable, from 1-60s)
• Anti-rush function: if there is no open single, arm will be holding tightly.
• Valid lock function can allow one passage at one time.
• Optional LED Counting and Direction indicating.