KELVIN® Electronics Kits
  • KELVIN® Strobe Light Kit

    KELVIN® Strobe Light Kit

    Popular kit flashes at a rate you control; from 120 to 300 times per minute, AC operated. Includes a pre- drilled PC board, components and instructions. Kit.

    $17.95
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  • KELVIN® Strobe Light Bulk Pack

    KELVIN® Strobe Light Bulk Pack

    Bulk Pack of 10 - As Low As $15 Per Kit! This popular kit flashes at a rate you control; from 120 to 300 times per minute. AC operated. Kit includes a pre-drilled PC board, components and instructions. Requires a 9V battery.

    $150.00
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  • KELVIN® Sound to Light Kit

    KELVIN® Sound to Light Kit

    This kit includes seven super bright LED's that flash simultaneously to sound energy inputted through the onboard microphone. Sensitivity can be adjusted by turning the volume control.

    $12.95
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  • KELVIN® Electronic Chirp Kit

    KELVIN® Electronic Chirp Kit

    Automatically comes on with switch. Makes repeating cricket sound (time between two crickets) using piezo electric buzzer. Requires a 9V battery.

    $9.95
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  • KELVIN® Police Siren Bulk Pack

    KELVIN® Police Siren Bulk Pack

    Bulk Pack of 20 - As Low As $6 Per Kit! This kit mimics a police car siren with tone adjustment. Can also be used as a burglar alarm. Requires a 9V battery.

    $120.00
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  • KELVIN® Big Ear Kit

    KELVIN® Big Ear Kit

    Amplify sounds from different sources from far away, birds, conversations. Add a parabolic reflector and hear blocks away. This kit contains all parts necessary to build an ultra sensitive listening device. Use a funnel or design your own reflective...

    $19.95
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  • KELVIN® Big Ear Bulk Pack

    KELVIN® Big Ear Bulk Pack

    Bulk Pack of 10 - 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 sensitive listening device. Use a...

    $160.00
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  • KELVIN® Big Ear Assembled Demo

    KELVIN® Big Ear Assembled Demo

    Amplify sounds from different sources (far away, birds, conversations. Add a parabolic reflector and hear blocks away. This kit contains all parts necessary tobuild an ultra sensitive listening device. Use a funnel or design your own reflective parabolic...

    $69.95
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  • KELVIN® KGB Ear Kit

    KELVIN® KGB Ear Kit

    Listen to a clear broadcast over a 100 ft. away using any standard FM radio. Includes a pre-drilled PC board, components and instructions. Requires a FM radio. Kit. For Educational Purposes Only

    $16.95
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  • KELVIN® KGB Ear Bulk Pack

    KELVIN® KGB Ear Bulk Pack

    Bulk Pack of 10 - As Low As $9.99 Per Kit! For education purposes only. Listen to a clear broadcast over 100 ft. away by using any standard FM radio. Each kit includes: Pre-Drilled PC Board Parts Instructions Requires a 9V battery and an FM Radio.

    $140.00
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  • KELVIN® KGB Ear Assembled Demo

    KELVIN® KGB Ear Assembled Demo

    For education purposes only. Listen to a clear broadcast over 100 ft. away by using any standard FM radio. Includes pre-drilled PC board, parts and instructions. Requires a 9V battery and an FM Radio. Teacher Demo Unit, Assembled/Tested.

    $69.95
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  • KELVIN® Intercom x 2 Way Kit

    KELVIN® Intercom x 2 Way Kit

    Small low profile, lightweight intercom with excellent sound quality and long battery life. Additional features include a big easy to use "push-to-talk" button and LED indicator that light up when it is in use. Convenient screw-type connectors for...

    $29.95
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  • KELVIN® Audio Amplifier Booster Kit

    KELVIN® Audio Amplifier Booster Kit

    Amplifies music from a portable CD player, audio project, or any audio signal up to 1W and relays it to an 8 ohm speaker with volume control (speaker included). Requires 9V DC Battery.

    $6.95
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  • KELVIN® Audio Amplifier Booster Bulk Pack

    KELVIN® Audio Amplifier Booster Bulk Pack

    Bulk Pack of 20 - 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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