KELVIN® Electronics Kits
  • KELVIN® Intercom X2 Way

    KELVIN® Intercom X2 Way

    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
    Add to Cart
  • 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
    Add to Cart
  • KELVIN® KGB Ear Bulk Pack

    KELVIN® KGB Ear Bulk Pack

    Bulk Pack of 10 Kits 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...

    $99.95
    Add to Cart
  • 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

    $11.95
    Add to Cart
  • KELVIN® Light Activated Circuit Assembled Demo

    KELVIN® Light Activated Circuit Assembled Demo

    This kit uses a light to activate a relay that will trigger your alarm or your robotic system to operate. It has a built-in photocell, plus a relay and a potentiometer for sensitivity adjustment. Requires a 9V battery. Does not include enclosure. Teacher...

    $59.95
    Add to Cart
  • KELVIN® Light Activated Circuit Bulk Pack

    KELVIN® Light Activated Circuit Bulk Pack

    Bulk Pack of 20 Kits As Low As $7.45 Per Kit This kit uses a light to activate a relay that will trigger your alarm or your robotic system to operate. It has a built-in photocell, plus a relay and a potentiometer for sensitivity...

    $149.00
    Add to Cart
  • KELVIN® Light Activated Circuit Kit

    KELVIN® Light Activated Circuit Kit

    Add Light Automation to your Project! This kit uses light to activate a relay that will trigger your alarm or your robotic system to operate. It has a built in photocell, relay and a potentiometer for sensitivity adjustment. Requires 9VDC battery. Kit.

    $9.95
    Add to Cart
  • KELVIN® Metal Detector

    KELVIN® Metal Detector

    This handy metal detector, detects metallic objects in or behind surfaces. Sensor is mounted on a wooden stick to minimize interference. Kit requires a 9V DC battery. Kit does not include an enclosure.

    $14.95
    Add to Cart
  • KELVIN® Metal Detector Assembled Demo

    KELVIN® Metal Detector Assembled Demo

    This handy metal detector, detects metallic objects in or behind surfaces. Sensor is mounted on a wooden stickto minimize interference. Requires a 9V battery. Does not include enclosure, use #430182. Teacher Demo Unit, Assembled/Tested.

    $69.95
    Add to Cart
  • KELVIN® Metal Detector Bulk Pack

    KELVIN® Metal Detector Bulk Pack

    Bulk Pack of 10 Kits As Low As $12.00 Per Kit This handy metal detector, detects metallic objects in or behind surfaces. Sensor is mounted on a wooden stick to minimize interference. Requires a 9V battery. Does not include enclosure,...

    $120.00
    Add to Cart
  • KELVIN® Metal Stud Finder

    KELVIN® Metal Stud Finder

    This handheld kit detects Metal Studs behind a wall. Helps with remodeling and wiring. Kit requires a 9V DC battery. Kit does not include an enclosure.

    $12.75
    Add to Cart
Compare Selected