KELVIN® Decision Stick Assembled Demo Push the button to display the answers to all of your questions. Requires a 9V battery. Does not include enclosure, use 430202. Teacher Demo Unit, Hand Assembled/Tested. MSRP: Was: Now: $59.95 Add to Cart
KELVIN® Dice Kit Electronic die with an LED indication. Rolls slowly out when the push button is released. Requires a 9V battery. MSRP: Was: Now: $12.95 Add to Cart
KELVIN® Number Picker Kit Kit is used to randomly select any number from 0-9. Push the button and the 7 segment display shows numbers until it's released. Once released, the number selection gradually stops and finally one number remains. Requires a 9V battery. MSRP: Was: Now: $13.95 Add to Cart
KELVIN® Number Picker Bulk Pack Bulk Pack of 10 - As Low As $9.99 Per Kit! You can use this kit to select numbers from 0-9. Push the button and the seven segment display will show numbers until it is released. Once released it gradually stops and only one number remains. Requires a 9V... MSRP: Was: Now: $99.95 Add to Cart
KELVIN® Number Picker Assembled Demo You can use this kit to select numbers from 0-9. Push the button and the seven segment display will show numbers until it is released. Once released it gradually stops and only one number remains. Requires a 9V battery. Does not include enclosure, use... MSRP: Was: Now: $59.95 Add to Cart
KELVIN® Wheel of Fortune Kit Push the button and see 10 LEDs appear to spin around the wheel with electronic ticking sounds. Release the button and flashing speed gradually decreases until one LED remains lit. Requires a 9V battery. MSRP: Was: Now: $10.95 Add to Cart
KELVIN® Wheel of Fortune Bulk Pack Bulk Pack of 10 - As Low As $8.90 Per Kit! Push the button and see 10 LEDs appear to spin around the wheel and hear electronic ticking sounds. Release the button and flashing speed gradually decreases until one LED remains lit. Requires a 9V battery... MSRP: Was: Now: $89.00 Add to Cart
KELVIN® Wheel of Fortune Assembled Demo Push the button and see 10 LEDs appear to spin around the wheel and hear electronic ticking sounds. Release the button and flashing speed gradually decreases until one LED remains lit. Requires a 9V battery. Teacher Demo Unit, Assembled/Tested. MSRP: Was: Now: $59.95 Add to Cart
KELVIN® Speedy Brain Kit Just 4 LEDs and 4 push buttons provide hours of fun. The aim-of-the-game is to repeat a pattern, which is generated at random. Low power consumption. Micro-processor controlled. Auto power off. Requires [4] AA batteries. Kit. Also check out 282080. MSRP: Was: Now: $19.95 Add to Cart
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. MSRP: Was: Now: $9.95 Add to Cart
KELVIN® Light Activated Circuit Bulk Pack Bulk Pack of 20 - 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 adjustment. Requires a 9V... MSRP: Was: Now: $149.00 Add to Cart
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... MSRP: Was: Now: $59.95 Add to Cart
KELVIN® Sound Activated Circuit Kit The ideal kit for your robotic and automation project. By using a sound or voice source, this kit will energize a relay. It has a sensitivity adjustment increase or decrease the microphone level. Requires 9VDC battery. Kit. MSRP: Was: Now: $12.95 Add to Cart
KELVIN® Sound Activated Circuit Bulk Pack Bulk Pack of 10 - As Low As $10.50 Per Kit! Ideal kit for robotic and automation projects. By using sound or voice sources, a relay is energized. Increase or decrease the microphone level with the sensitivity adjustment. Requires a 9V battery. MSRP: Was: Now: $105.00 Add to Cart
KELVIN® Sound Activated Circuit Assembled Demo Ideal kit for robotic and automation projects. By using sound or voice sources, a relay is energized. Increase or decrease the microphone level with the sensitivity adjustment. Requires a 9V battery. Teacher Demo Unit, Assembled/Tested. MSRP: Was: Now: $59.95 Add to Cart
KELVIN® Touch Control Circuit Kit Turn-on or off a circuit with the touch of your finger. Use it with your alarm or automation projects. MSRP: Was: Now: $7.95 Add to Cart
KELVIN® Touch Control Circuit Bulk Pack Bulk Pack of 30 - As Low As $6.50 Per Kit! Ideal for use with your alarm or automation projects.This kit will demonstrate how to activate a relay just by touching the ON probe. By touching the OFF probe, the relay is deactivated. Requires a 9V battery... MSRP: Was: Now: $195.00 Add to Cart
KELVIN® Touch Control Circuit Assembled Demo Ideal for use with your alarm or automation projects.This kit will demonstrate how to activate a relay just by touching the ON probe. By touching the OFF probe, the relay is deactivated. Requires a 9V battery. Does not include enclosure. Teacher Demo... MSRP: Was: Now: $49.95 Add to Cart
KELVIN® Temperature Control Kit General purpose thermostat with a NTC temperature sensor with a range of (41 degree F - 86 degree F). A relay output control's high power load with a 30 second hysteresis. Kit requires a 9V DC battery. Kit does not include an enclosure. MSRP: Was: Now: $13.95 Add to Cart
KELVIN® Temperature Control Bulk Pack Bulk Pack of 10 - As Low As $11.50 Per Kit! General purpose thermostat with a NTC temperature sensor with a range of (41° F to 86° F). A relay output control's high power load with a 30 second hysteresis. Requires 9V battery. Does not include enclosure. MSRP: Was: Now: $115.00 Add to Cart
