Electronics Kit Bulk Packs
  • Audio Level Meter Bulk Pack

    Audio Level Meter Bulk Pack

    Bulk Pack of 10 Kits As Low As $12.00 Per Kit Uses an LM3915 Bar Graph IC and audio pre-amplifier stage to measure an audio level. The Meter includes a sensitivity adjuster to increase and decrease the mic's sensitivity level...

    $120.00
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  • Continuity Tester with LED Light Bulk Pack

    Bulk Pack of 20 Kits As Low As $2.95 Per Kit This is a real test instrument! Don't be fooled by the low price. KELVIN® is making this kit affordable for all. When troubleshooting a circuit, this kit would be a great tool...

    $88.50
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  • Crystal Radio Bulk Pack

    Crystal Radio Bulk Pack

    Bulk Pack of 10 Kits As Low As $17.50 Per Kit They're a unique flat design that can be made to look like a postcard (based on an actual design that enabled radios to be sent through the post!) The radio is assembled by...

    $175.00
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  • KELVIN® 20 Watt Audio Amplifier Bulk Pack

    KELVIN® 20 Watt Audio Amplifier Bulk Pack

    Bulk Pack of 10 Kits As Low As $16.00 Per Kit All the parts necessary to build a 20W Mono Hi-Fi Amplifier using a LM1875. Amplify any small signal and drive an 8 ohm speaker with 1% THD. Requires a 12-30 V DC power supply...

    $160.00
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  • KELVIN® Audio Amplifier Booster Bulk Pack

    KELVIN® Audio Amplifier Booster Bulk Pack

    Bulk Pack of 20 Kits As Low As $5.45 Per Kit Amplify music from a portable CD player or any audio signal up to 1W. Relays it to a speaker with volume control (speaker included). Requires a 9V battery. 

    $109.00
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  • KELVIN® Bicycle Safety Light Bulk Pack

    KELVIN® Bicycle Safety Light Bulk Pack

    Bulk Pack of 10 Kits As Low As $9.99 Per Kit Build this kit and connect it to your bicycle or place it on your table top or on the wall for a conversation piece. Requires [2] AA batteries. Does not include enclosure, use...

    $99.95
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  • KELVIN® Big Ear Bulk Pack

    KELVIN® Big Ear Bulk Pack

    Bulk Pack of 10 Kits As Low As $16.00 Per Kit Amplify sounds from different sources (far away, birds, conversations. Add a parabolic reflector and hear blocks away. This kit contains all parts necessary to build an ultra...

    $160.00
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  • KELVIN® Blinking LEDs Bulk Pack

    KELVIN® Blinking LEDs Bulk Pack

    Bulk Pack of 30 Kits As Low As $1.95 Per Kit When you want the attention, put this kit on your shirt but first, you have to assemble and test it! This kit demonstrates how to blink two LEDs with common electronic components...

    $58.50
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  • KELVIN® Fiber Optic Alarm Bulk Pack

    KELVIN® Fiber Optic Alarm Bulk Pack

    Bulk Pack of 10 Kits As Low As $24.50 Per Kit Design, Build and Test a Structure Wrap the fiber optic cord around a valuable possession. If the cord is cut, the relay will trigger your alarm circuitry (not included). The...

    $245.00
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