Whether you're a sports fan or not, you've probably heard of the hand-held metal detector.
But how does it work? What are the different kinds of detectors, and how can they be used in sports events? We'll give you the lowdown on everything you need to know about these handy devices.
A hand-held metal detector is a device that detects metallic objects such as guns or knives. These machines have been used for decades by law enforcement officers and security officials to search for weapons in airports, schools, and other public places.
Today, however, hand-held metal detectors are used by sports fans at stadiums and other sporting events to see if any weapons are concealed in their clothes. If a weapon is detected by the machine's sensors, fans may be asked to remove their clothing for inspection before being allowed back into the venue.
Types of Hand-Held Metal Detectors
There are several kinds of hand-held metal detectors available on the market today:
Detection distance:
1. Pin: 0 ~ 2 cm
2. Blade: 0 ~6 cm
3. Plastic lighter: 0 ~4 cm
4. Mobile phone: 0 ~ 15 cm
5. Pistol
6. Cigarette (full box)
Technical parameter:
Color: Grey
Materials: Shock-resistant, impact-resistant ABS plastic
Radiation magnetic induction: 0.4 μT
Sound of alarm: 75.6 dB
Frequency: About 25 KHz
Size: 403 ( L) x 118 ( W) x 35 ( H) mm
Power: Standard 6F22 9V alkaline or rechargeable battery
Net weight: 357 g ( Without battery)
Operating temperature: -20℃ + 55 ℃
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