PI metal detector (NH-250)

Low reaction for stones, consists iron and ferrous oxides

Possibility to use small, normal and big coils

Easy mounting in a box

You can use this metal detector for:

- General purpose metal detector 

- Searching on the beach 

- Underwater metal detector 

- Searching meteorites 

- Searching gold (nugget) 

- Detector for deep searching

Characteristics:

Model: NH-250

Principle: Pulse Induction

Mode: non-motion with DISCRIMNATION (Iron rejection)

Search coil: You can buy it from the site. Also you can do it yourself (description in the manual).

Sensitivity: 25 cm for small coin, 30 cm for big coin.

Indication: LCD display, sound

Ground compensation

Power: 18V,  reverse polarity protection (Also you can use 4-12V battery with DC-DC Step Up Power Module

Low battery alarm

Consumption: 140 mА

Dimensions of PCB: 84 x 97 mm