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98-38 - 0-15volt 300ma Power Supply Challenge *
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98-51 - Mosquito Repeller Challenge *
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98-79 - Flashing Heart-to-Heart Kit Challenge *
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98-83 - The Haunted House Pumpkin Kit Challenge *
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9901 - Super Random Dice Game Challenge *
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9906 - Burglar Alarm with reset switch Challenge *
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99108 - Powerful FM Transmitter Kit with mic Challenge *
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9912 - Hand-Held Police Siren Challenge *
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9918 - Angler's 'Big Fish' Caller Challenge *
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9921 - Christmas Tree LED Display Challenge *
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9924 - Automatic Police Siren Kit Challenge *
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9940 - Strobe Light Kit Challenge *
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9950 - Whooper Alarm Challenge *
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9978 - Digital Birds Sound Generator Challenge *
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9985 - Audio Activated Musical Strobe Challenge *
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9986 - Powerful Audio Amp & Intercom Challenge *
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9988 - Hidden Insanity Game Challenge *
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9999 - Two-LED Blinker Challenge *
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K001 - Alien Blinker Kit Challenge *
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K002 - Dual Burglar Alarm Kit Challenge *
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K003 - Model Railroad Lights Kit Challenge *
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K004 - Continuity Checker Challenge *
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K007 - Light Sensitive Alarm Kit Challenge *
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K013 - Mini Signal Injector Challenge *
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K014 - Audio Signal Tracer Challenge *
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K019 - Motor Speed Control Challenge *
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K031 - Photo Electric Counter Kit Challenge *
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