Metal detector industriale giallo dell'allarme del &Lamp del cicalino per metallo ferroso

Buzzer &Lamp Alarm Yellow Industrial Metal Detector For Ferrous Metal TY-20MJ handy type needle metal detector, it is called portable needle detector,which is small is small,and easy to carry by hand,It uses principle of magnetic field , can effectively detect out the exact location of the broken needle or Fe,which is especially suitable for the thin and small goods , After detection by the big standing needle detector , use this portable one to find the exact location of the