Correlation photoelectric sensor infrared correlation counting sensor

The Correlation photoelectric sensor is a slot-type infrared counting module, also called a photo-interrupter or beam-break sensor. An infrared emitter and receiver face each other across a slot; when an object or the tooth of an encoder disc passes through the slot and blocks the beam, the module's digital output changes state. It is a simple way to count objects or measure wheel and motor speed with an Arduino or ESP32.

Correlation photoelectric sensor Specifications

• Type: slot-type (through-beam) infrared photo-interrupter module
• Sensing: infrared emitter and receiver facing each other across a slot
• Output: digital, changes state when the beam is blocked
• Signal conditioning: onboard comparator for a clean digital signal
• Indicators: onboard LEDs for power and output state

Correlation photoelectric sensor Applications

• Motor and wheel speed measurement with an encoder disc
• Counting parts, coins or objects passing through the slot
• Position and limit detection in machines and 3D printers
• Smart car and robotics projects

What's in the Box

• 1 × infrared slot counting sensor module

Tip: Connect the output to an interrupt pin and count pulses over one second; speed in RPM equals pulses per second × 60 ÷ number of slots in the disc. Keep direct sunlight away from the slot, as strong infrared light can cause false counts.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.