As with most metal detectors; this design works on the principle of detecting the difference (or beat note) obtained by the mixing of two oscillators, the frequency of one which can be caused to alter, when the presence of a metal object is near its "search-coil" which is one of the frequency determining elements, of one of the oscillators.
Product Specifications
- The pinpointer is waterproof and can work in the rain. It will not work while submerged in water.
- Requires 1 x 9V Alkaline battery
- Length : 28.5 cm
- Width : 5 cm
- Height : 5 cm
