NOYAFA NF-511 Handheld Portable Metal Detector Mobile Screw Secure Instrument For Airport Station Public Metal Finder

Description 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 Features 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 Specification Test distanceScrew 2 3cmBlade 3 5cmMobile phone 10cm or soFruit knife about 15cmPower supply 1400mA polymer lithium batteryWorking frequency28KHzStand by current 10mAWorking current 80mAOperating temperature 10℃ 65℃Storage temperature 10℃ 70℃Size360 65 40mmPackage includes 1 Metal Detector1 USB Cable1 User ManualDetails picture