Patent ID: 6873263

Claim:
An integral moisture detector, audible alarm and message display card, comprising: a thin, rigid, non-conducting plastic board having upper and lower flat surfaces, each of said upper and lower surfaces having peripheral end edges, a first moisture detection conductor imprinted on said upper surface of said board around its entire periphery, a second moisture detection conductor imprinted on said upper surface of said board, said second moisture detection conductor being completely circumscribed by said first moisture detection conductor, said second moisture detection conductor being spaced inwardly away from said first moisture detection conductor in a direction away from said peripheral end edges of said upper surface, a third moisture detection conductor imprinted on said lower surface of said board around its entire periphery, a fourth moisture detection conductor imprinted on said lower surface of said board, said fourth moisture detection conductor being completely circumscribed by said third moisture detection conductor, said fourth moisture detection conductor being spaced inwardly away from said third moisture detection conductor in a direction away from said peripheral end edges of said lower surface, a first metallic connector extending through said board and electrically connecting said first and third moisture detection conductors, a second metallic connector extending through said board and electrically connecting said second and fourth moisture detection conductors, a housing on said upper surface of said board, said housing containing a circuit electrically connecting a battery, sound chip and speaker, conductors extending into said housing and being connected to opposite polarity terminals of said circuit so that moisture contacting said moisture detection conductors causes current to flow from said battery to said sound chip so as to activate said speaker to produce audible sound, and there being a flat smooth unobstructed area of one of said surfaces of said board having a written message displayed thereon, said unobstructed area being surrounded by one of said moisture detecting conductors.