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 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® Bicycle Safety Light Bulk Pack Bulk Pack of 10 Kits 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, use... MSRP: Was: Now: $99.95 Add to Cart
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... MSRP: Was: Now: $69.95 Add to Cart
KELVIN® Big Ear Bulk Pack Bulk Pack of 10 Kits 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... MSRP: Was: Now: $160.00 Add to Cart
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... MSRP: Was: Now: $19.95 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® Blinking LEDs Bulk Pack Bulk Pack of 30 Kits 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... MSRP: Was: Now: $58.50 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® 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® Continuity Tester Bulk Pack Bulk Pack of 20 Kits As Low As $2.95 Per Kit Don't be fooled by the low price - this is a real test instrument with LED light only. When troubleshooting a circuit, this kit would be a great tool to test for continuity in a circuit... MSRP: Was: Now: $88.50 Add to Cart
KELVIN® Continuity Tester w/ Electric Buzzer Assembled Demo Teacher demo unit is assembled and tested. When troubleshooting a circuit, this kit would be a great tool to test for continuity in a circuit. It has a LED light and built-in electric buzzer for a clear audible sound. PC board measures 1-1/2 x... MSRP: Was: Now: $59.95 Add to Cart
