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  • Water Detector Soldering Practice Electrical Engineering Kit

    • Item No : 125640641927
    • Condition : New
    • Brand : Electronix Express
    • Seller : sciencepurchase
    • Current Bid : US $21.99
    • * Item Description

    • 555 Oscillator circuit drives speaker (included) to sound alarm when water level rises on remote detector board and changes conductivity between two contacts.
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