| Return shipping will be paid by | Buyer |
|---|---|
| All returns accepted | Returns Accepted |
| Item must be returned within | 30 Days |
| Refund will be given as | Money back or replacement (buyer's choice) |
| Brand | Electronix Express |
Check the listing for details. Reaction Time Tester Engineering Kit with Circuit Diagram, No Soldering Required. Condition: New. Listed at 14.99 USD. The Reaction Tester is based around the 555 timer IC. The kit is designed to test and expand one's sense of timing. The students need to synchronize their reaction time to press the button in time to keep the LED lit or else it goes out. Note: Step by step instructions are not included - use the included parts list to identify the components and assemble according to the included circuit diagram. Jumper wire not included (breadboard accepts 21 to 26 AWG wire).