Other Testing Equipments : Hand-held metal detector

    Item Specifics:
    Is_customized : Yes
    Brand Name : Noyafa
    Model Number : NF-511
    Place of Origin : Shenzhen.China

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1.Metal objects as small as a coin can be detected on a person through heavy clothing ,and in more difficult places such as body cavities;
2.Waterproof with slip free handle ;
3.High sensitive with convenient adjustment;
4.Quick response time with advanced circuitry;
5.High quality polymer lithium battery with long battery life;
6.Two alarm modes: audio and LED alarm or vibration alarm;
The metal detector is a portable electronic instrument which detects the presence of metal nearby. 
Metal detectors are useful for finding metal inclusions hidden within objects, or metal objects buried underground.
They often consist of a hand-held unit with a sensor probe which can be swept over the ground or other objects.
If the sensor comes near a piece of metal this is indicated by a changing tone in earphones, or a needle moving on an indicator.
Usually the device gives some indication of distance; the closer the metal is, the higher the tone in the earphone or the higher the needle goes. 
Technical specification:

Test distance   Screw 2-3cm
Blade 3-5cm
Mobile phone 10cm or so
Fruit knife  about 15cm
Power supply  1400mA polymer lithium battery
Working frequency 28KHz
Stand-by current <10mA
Working current <80mA
Operating temperature -10℃~65℃
Storage temperature -10℃~70℃


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