Generic 5PCS Slot Type IR Optocoupler Speed Sensor Module LM393 for Arduino Groove Coupler Sensor 3.3V-5V Connect Relay Buzzer Module

Module Features:Use groove coupler sensor Groove Width: 5mm Output state indicator lights Obscured output high; bstructed output low The comparator output, the signal is clean, the waveform, driving ability, more than 15mA Operating Voltage: 3.3V-5V The output in the form: Digital switching outputs (0 and 1) A fixed bolt hole for easy installation Small plates PCB Dimensions: 3.2 x 1.4cm / 1.25 * 0.55" Using a wide voltage LM393 comparator Module Using The Instructions: Module slot bstructed, receiver tube conduction module DO output low, shelter, DO output high Module DO connected to the relay, composed of the limit switch functions can also be connected to the active buzzer module, composed of the alarm Package include: 5PCS * Slot Type IR Optocoupler Speed Sensor Module LM393 For Arduino Groove Coupler Sensor 3.3V-5V Connect Relay Buzzer Module

• 5PCS Slot Type IR Optocoupler Speed Sensor Module LM393 For Arduino Groove Coupler Sensor 3.3V-5V Connect Relay Buzzer Module