IR Comparitor Speed Sensor LM393 Module for Arduino Robotics RPM and More

Description

1, the use of imported slot optocoupler sensor, slot width 5mm.
2, the output status indicator, the output high-level lights off, the output low-level lights.
3, a block, the output high; no shelter, the output low.
4, the comparator output, the signal clean, good waveform, driving ability, more than 15mA.
5, the working voltage of 3.3V-5V
6, the output form: digital switch output (0 and 1)
7, with a fixed bolt hole, easy to install
8, small board PCB size: 3.2cm x 1.4cm
9, the use of wide voltage LM393 comparator