The handheld portable needle detector uses the magnetic induction principle to effectively and accurately detect the specific iron position of needles and other items.
High sensitivity with one key adjustment function, sound and light alarm function at the same time, allowing for continuous work without heat or overload.
Suitable for thin parts, perfect for testing small items, find small ferromagnetic metal needles or exact positions.
Note: If the supply voltage is less than 6v, it will produce a continuous chap or more sound that indicates the power is running out and need to be replaced.