20 KHz Black Portable Hand Held Body Scanner Detector A Coin Sensitivity

Description:

High sensitivity

Detects a pin within 30 to 60mm

Conveniently and simply to operate

Easily to adjust

When battery voltage drop from 9 to 7V, detecting distance remain unchanged

Energy smart: can work 40 hours continuously

Except the light alarm, audible alarm and the vibratory alarm can be chosen

When the battery nearly dies, audible alarm or vibratory alarm should be a warning

Turn on (off) the detector, it will give you an audible alarm or a vibratory alarm

There are also two sensitivities, high and low, to select

Rechargeable:charge it about 4-6 hours after the battery die

Self-checking: it self-checks when it starts

Using ABS, durable

Specifications:

Applications:

Security check: avoid carrying contraband, such as knives, guns and more

Factory: avoid valuables losing

Education: avoid cheating, prevent from carrying cheating tools, such as phones,  electronic Dictionary and more when examine

Ultimate sensitivity:

38 pistol: 20cm

Little knife: 15cm

Blade: 10cm

Coin: 8cm