Tachometer Speed Sensor

  • Fast Shipping

    Receive products in amazing time
  • Easy Returns

    Return policy that lets you shop at ease
  • Always Authentic

    We only sell 100% authentic products
  • Secure Shopping

    Your data is always protected



  • Speed Sensor Module LM393 Motor Measuring Comparator Slot Type IR Optocoupler for MCU Arduin0
  • The use of imported groove coupler sensor, slot width 5mm.
  • The output status indicator light, output high, output low lights.
  • Block, high output; No Shelter, Low Output
  • Clean signal comparator output, good waveform, more than 15mA driving capability.
  • Voltage 3.3V-5V
  • Output format: digital switching output (0 and 1)
  • Fixed bolt holes for easy installation
  • Small PCB board size: 3.2cm x 1.4cm.
  • Using a wide voltage LM393 comparator
  • Widely used in motor speed detection, pulse counter, etc.


  • Designed with slotted optical switch sensor and indicator light.
  • Indicator lights on when output high level and lights off when output low level.
  • Using wide voltage LM393 comparator. Clean signal, good waveform
  • Working with official MCU board.
  • Applied to the corridor, bathroom, basement, warehouse, garage and other places’ automatic lighting, can also be applied to enterprises, hotels, shopping malls’ alarm system.
  • With this IR transmitter, the Arduino project is able to transmit command to any IR remote Receiver if you have the right decoder.

Product wiring instructions:

  • VCC positive power supply 3.3-5V
  • GND power supply negative
  • Do TTL switching signal output
  • Ao This module does not work.