Specifications:
1. Use imported slot-type optocoupler sensor, slot width 5mm.
2. There is an output status indicator, the output high level light is off, and the output low level light is on.
3. With occlusion, output high level; without occlusion, output low level.
4. Comparator output, the signal is clean, the waveform is good, the driving ability is strong, more than 15mA.
5. Working voltage 3.3V-5V
6. Output form: digital switch output (0 and 1)
7. With fixing bolt holes for easy installation
8. Small board PCB size: 32 x 14mm/1.26 x 0.55in
9. Use a wide voltage LM393 comparator

Wiring Instructions:
1. VCC is connected to the positive pole of the power supply 3.3-5V
2. GND is connected to the negative pole of the power supply
3. DO TTL switch signal output
4. AO This module does not work

Package included:
10 x Speed Measuring Sensor LM393