Functions:
    ● Calibrating automatically after turn-on
    ● Kinds of detect mode selecting function (detecting live AC wire , metal)
    ● Sound light indicates detecting result
    ● Accurately marking of object's position
    ● Easy to operate and carry
    ● Detection capability:
          Ferromagnetic metal tube: 40mm (1 1/2 inch)
      Non-ferromagnetic metal tube: 20mm (3/4 inch)
                      AC live line: 80mm (3 inches)
Application:
    ● Indoor decoration or construction
    ● Home appliances (such as air conditioners) installation