Circuitrocks Photoelectric Counter IR LM393

Circuitrocks. DESCRIPTION: First dimension: 32mm X 11mm X height 20mm width. Second, the main chip: LM393, infrared on the radio head. Third, the working voltage: DC 5 V. Four characteristics: Having a signal output instruction. A single-channel signal output. The output valid signal is low. The sensitivity is not adjustable. Can be used to count the workpiece, the motor speed. The circuit board output switch. This Photo Electric Counter IR Optocoupler uses a groove IR Optocoupler to detect if there is anything between the IR emiter and IR receiver. With this method, this module can detect the number of obstruction in a given time thus to detect the speed of the rotation. When the opto sensor didn't covered, the D0 output logic LOW, the signal indicate LED light, when the opto sensor covered, the D0 output logic HIGH and the LED off, adjust the potentiometer can adjust the sensitivity of the sensor