KELVIN® Electronics Kits
  • KELVIN® Metal Stud Finder Assembled Demo

    KELVIN® Metal Stud Finder Assembled Demo

    This handheld kit detects metal studs behind a wall. Helps with remodeling and wiring. Requires a 9V battery. Does not include enclosure, use 430182. Teacher Demo Unit, Assembled/Tested.

    $69.95
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  • KELVIN® Metal Stud Finder Bulk Pack

    KELVIN® Metal Stud Finder 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.

    $99.95
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  • KELVIN® Micro-Mazer™  Kit

    KELVIN® Micro-Mazer™ Kit

    This is a fun kit! The layout of the components on the PC board gives it the look of an electronic robotic face. The blinking LED eyes give it a personality. And the price gives you a reason to buy a dozen or two. Put it on your shirt and you'll be sure...

    $6.95
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  • KELVIN® Micro-Mazer™ Assembled Demo

    KELVIN® Micro-Mazer™ Assembled Demo

    The layout of components gives this kit a 'robotic face'. Blinking LED eyes give it a personality. The kit has [2] blinking LEDs for eyes, and a jumbo LED for a nose. Requires a 9V battery. Teacher Demo Unit, Assembled/Tested.

    $49.95
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  • KELVIN® Micro-Mazer™ Bulk Pack

    KELVIN® Micro-Mazer™ Bulk Pack

    Bulk Pack of 20 - As Low As $3.95 Per Kit! The layout of components gives this kit a 'robotic face'. Blinking LED eyes give it a personality. Each kit includes: [2] blinking LEDs for eyes and a jumbo LED for a nose. Requires a 9V battery.

    $79.00
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  • KELVIN® Moisture Sensor Assembled Demo

    KELVIN® Moisture Sensor Assembled Demo

    Use this kit to check the soil moisture of plants and keep them alive! By placing probes in the potting soil of the plant, the moisture level is tested and a buzzer sounds if the level is low. Requires a 9V battery. Teacher Demo Unit, Assembled/Tested.

    $59.95
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  • KELVIN® Moisture Sensor Bulk Pack

    KELVIN® Moisture Sensor Bulk Pack

    Bulk Pack of 20 - As Low As $7.45 Per Kit! Use this kit to check the soil moisture of plants and keep them alive! By placing probes in the potting soil of the plant, the moisture level is tested and a buzzer sounds if the level is low. Requires a 9V...

    $149.00
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  • KELVIN® Moisture Sensor Kit

    KELVIN® Moisture Sensor Kit

    How about giving plant lovers a gift? Build this KELVIN® Plant Moisture Monitor, and use it to check soil moisture for your plants- and keep the plants alive! By placing the probes in the potting soil of the plant, the moisture level is tested and a...

    $9.95
    Add to Cart
  • KELVIN® Motor Speed Control Assembled Demo

    KELVIN® Motor Speed Control Assembled Demo

    Use Pulse-Width Modulation (PWM) to vary the speed of a DC motor from 0 to 100%. Can be used for any DC motors from 3 to 25 Volt with 3 Amp maximum current draw. It is ideal to control the speed of a fan, toy motor, model train and so on. Teacher Demo...

    $69.95
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  • KELVIN® Motor Speed Control Bulk Pack

    KELVIN® Motor Speed Control Bulk Pack

    Bulk Pack of 10 - As Low As $12.50 Per Kit! Use Pulse-Width Modulation (PWM) to vary the speed of a DC motor from 0 to 100%. Can be used for any DC motors from 3 to 25 Volt with 3 Amp maximum current draw. It is ideal to control the speed of a fan, toy...

    $125.00
    Add to Cart
  • KELVIN® Motor Speed Control Kit

    KELVIN® Motor Speed Control Kit

    This kit uses Pulse-Width Modulation (PWM) to vary the speed of a DC motor from 0 to 100%. Can be used for any DC motors from 3 to 25 Volt with 3 Amp maximum current draw. It is ideal to control the speed of a fan, toy motor, model train and so on.

    $15.95
    Add to Cart
  • KELVIN® Night Light & Battery Charger

    KELVIN® Night Light & Battery Charger

    Includes PC board and parts including LED light, battery holder for a rechargeable AA battery (rechargeable battery not included) and solar panel. Requires soldering and assembly. Kit. PLEASE NOTE: KELVIN® reserves the right to substitute kit contents...

    $12.95
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