Slot Type on the radio using optical, non-transparent objects can be triggered by Slot Type, output 5V TTL level. Schmitt trigger pulse to shake, can be used to measure car speed, distance measurement applications!
Four pin defined as +5 GND OUT1 OUT2, OUT1 OUT2 is level output! Direct access to the microcontroller IO port, each way with a LED indicating the output status
1 X 2WD Speed Module