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

Application: Widely used in detecting motor speed, pulse count, position limit, etc. Feature: Using imported groove optical coupling sensor, width 5mm. It has an output status light, if the output level is high, the lights are off. If the output level is low, it will be triggered. If covered, it will produce a high level; otherwise, it produces a low level. Good signal and waveform, with a strong driving capacity of more than 15mA. Operating voltage from 3.3V to 5V. Output: digital switch output (0 and 1). Equipped with a fixed bolt hole, easy to install. Small PCB size: 3.2cm x 1.4cm. Uses LM393 wide voltage comparator. Customization: The DO output interface can be directly connected to the IO port of the microcontroller, if there is a mass detection sensor, such as the motor encoder speed can be detected. DO units can be connected to relays, limit switches, and other functions, and can also be used with an active buzzer module to create an alarm. Wiring specifications: VCC connect to positive 3.3V to 5V power supply GND connect to negative power supply Is the TTL switch signal output AO this unit does not work? Package includes: 10 × speed gauge sensor module