This latest 3 in 1 Detector has 3
    extremely useful DIY functions:
    Damp Detector: Will detect rising or penetrating damp in
    internal and external walls - plaster, concrete or soothing. Gives essential information,
    especially before decorating or building works.
    Voltage Detection: Detects live circuits and broken cables -
    suitable for any voltage range.
    Metal Detection: Locates water pipes, electric conduit, studs
    or nails in wall cavities.