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... MSRP: Was: Now: $69.95 Add to Cart
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... MSRP: Was: Now: $125.00 Add to Cart
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. MSRP: Was: Now: $15.95 Add to Cart
KELVIN® Night Light Kit Introduce your students to beginning electronic theory, electronic components, circuit boards and soldering with this kit. The KELVIN® Night Light kit uses a photocell to automatically turn on a super bright LED as the room darkens and turns off the LED... MSRP: Was: Now: $5.95 Add to Cart
KELVIN® Night Light Bulk Pack Bulk Pack of 30 - As Low As $3.95 Per Kit! Introduce your students to beginning electronic theory, electronic components, circuit boards and soldering with KELVIN®'s Night Light Kit. The KELVIN® Night Light kit uses a photocell to automatically turn on a... MSRP: Was: Now: $118.50 Add to Cart
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... MSRP: Was: Now: $12.95 Add to Cart
KELVIN® 3D Christmas Tree Kit This kit features 32 LEDs that can either blink in pattern or light up the whole board with the use of two switches. Easy assembly by sliding the two boards together onto the bottom board (where major components are soldered). Requires 9V battery. MSRP: Was: Now: $15.95 Add to Cart
KELVIN® Christmas Tree Kit This kit has [16] LEDs that can either blink in pattern or whole board with the use of two switches. Requires 9V battery. MSRP: Was: Now: $10.95 Add to Cart
KELVIN® Hanukkah Menorah Kit The Hanukkah Menorah features big 10mm LEDs to simulate candles. Two small, low profile switches help "turn on" the right amount of LEDs or reset the unit. The assembled board is 6 in. long and 3 in. tall. Each kit includes: pc board, switches, LEDs, and... MSRP: Was: Now: $34.95 Add to Cart
KELVIN® Hanukkah Menorah Assembled Demo The Hanukkah Menorah features big 10mm LEDs to simulate candles. Two small, low profile switches help "turn on" the right amount of LEDs or reset the unit. The assembled board is 6 in. long and 3 in. tall. Can be powered by 9v battery (220019) or a 9V... MSRP: Was: Now: $85.00 Add to Cart
KELVIN® Flashing & Adjustable Jumbo LED Kit Uses one adjustable potentiometer and large LEDs (10mm). Assembly and soldering required. Bulk pack also available. MSRP: Was: Now: $5.95 Add to Cart
KELVIN® Flashing & Adjustable Jumbo LED Bulk Pack Bulk Pack of 30 - As Low As $4.25 Per Kit! Uses one adjustable potentiometer and large LEDs (10mm). MSRP: Was: Now: $127.50 Add to Cart
KELVIN® Flashing LED Heart Kit A heart is formed by 16 LEDs. The first switch flashes the whole heart, the second switch flashes 1/2 of the heart then the other. Requires a 9V DC battery. MSRP: Was: Now: $11.95 Add to Cart
KELVIN® Bicycle Safety Light Build this kit and connect it to your bicycle or place it on your table top or on the wall for a conversation piece. Kit requires [2] AA batteries. Kit does not include an enclosure. MSRP: Was: Now: $11.95 Add to Cart
KELVIN® Bicycle Safety Light Bulk Pack Bulk Pack of 10 - 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. MSRP: Was: Now: $99.95 Add to Cart
KELVIN® Bicycle Safety Light Assembled Demo 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 430202. Enough for 10 Students. Teacher Demo Unit, Assembled/Tested. MSRP: Was: Now: $59.95 Add to Cart
KELVIN® Blinking LEDs Kit When you want the attention you deserve, put this kit on your shirt, but you have to assemble and test it! This kit demonstrates how to blink 2 LEDs with common electronic components, i.e. transistors, capacitors, resistors. Requires 9VDC battery. MSRP: Was: Now: $3.95 Add to Cart
KELVIN® Blinking LEDs Bulk Pack Bulk Pack of 30 - 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 such as capacitors and resistors... MSRP: Was: Now: $58.50 Add to Cart
KELVIN® Blinking LEDs Assembled Demo 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 such as capacitors and resistors. Requires a 9V battery. Teacher Demo Unit,... MSRP: Was: Now: $49.95 Add to Cart
KELVIN® Stroboscope Kit Features a very powerful flash effect. For warning signs, as eye-catcher, alarm, etc. Adjustable strobing frequency. Requires a 9V battery or 12V DC. MSRP: Was: Now: $15.95 Add to Cart
