Slot-type photoelectric interrupter sensor module front view

Slot-Type Photoelectric Interrupter Sensor Module - 3.3V to 5V

$2.99 NZD
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Slot-type photoelectric interrupter sensor module front view
  • Slot-type photoelectric interrupter sensor module front view
  • Rear of slot-type photoelectric interrupter module showing WCMCU PCB
  • Optical sensing slot and OUT VCC GND pins on photoelectric interrupter module
  • Slot-type photoelectric interrupter module approximate 26.6 by 14.8 millimetre PCB footprint
Slot-Type Photoelectric Interrupter Sensor Module - 3.3V to 5V
SKU: MOD-WYCH206-SLOT

Slot-Type Photoelectric Interrupter Sensor Module - 3.3V to 5V

$2.99 NZD
Dispatch: Within 24 hours 7-day dispatch, excluding public holidays

NZ Post: 1-2 days urban · 2-4 days rural

Shipping from $5.99 urban / $9.99 rural.

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Urban $66 Rural $88

This compact slot-type photoelectric interrupter module detects an opaque vane, wheel or tab passing through its optical fork and provides a digital signal for your controller. Use it for pulse counting, wheel speed, revolution sensing and repeatable position detection in Arduino, ESP32 and similar projects.

Specifications

Sensor typeTransmissive infrared slot interrupter
Supply3.3V to 5.0V DC
OutputDigital switching / pulse signal
ConnectionsOUT, VCC and GND
PCB footprintApprox. 26.6 x 14.8mm
MountingTwo PCB through-holes

Datasheets

Full technical datasheet PDF

What's in the box

1x
Slot-type photoelectric interrupter module

One assembled blue PCB with fitted optical fork and three-pin male header. Encoder disc, cable and mounting hardware are not included.

Great for

Robot wheel speed and revolution counting
Slotted encoder discs and tachometer projects
Position, home and end-of-travel detection
Digital event and object-pass counters

Wiring & getting started

  1. Connect power

    With power off, connect VCC to a regulated 3.3V or 5V rail and connect GND to the controller ground.

  2. Connect the signal

    Connect OUT to a digital input. Use an interrupt-capable pin when you need reliable pulse counting at speed.

  3. Check both states

    Power the module, read OUT with the slot clear, then pass an opaque vane fully through the gap and confirm the state changes.

  4. Calculate motion

    Count signal edges over time and divide by the number of slots or vanes per revolution to calculate speed or distance.

Note: This module family appears in more than one circuit revision, so idle output polarity can vary. Check both clear-slot and blocked-slot states in your finished circuit rather than assuming HIGH or LOW at rest.

Frequently Asked Questions

Answers to the questions buyers ask most.

Can I use this module with Arduino or ESP32?
Yes. Use a regulated supply that matches your controller logic, connect the grounds together and connect OUT to a digital input. For ESP32, power the module from 3.3V so the output stays within the ESP32 input range.
What does the sensor detect?
It detects an opaque vane, tab or slotted encoder disc passing through the optical gap. It is a transmissive interrupter, not a reflective distance sensor.
Can it measure motor or wheel speed?
Yes. Count the output transitions over a known time and divide by the number of slots or vanes per revolution.
Is an encoder disc included?
No. The listing includes one assembled sensor module only. Encoder discs, cables and mounting hardware are not included.
Is the output HIGH or LOW when the slot is blocked?
Board revisions can use different output polarity. Read OUT once with the slot clear and once blocked, then use those observed states in your code.

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Why Buy from NZN

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I'm Lukas, an engineering student and maker based in Te Awamutu. NZN grew out of a CNC build that dragged on for months because every missing cable, bolt or electronic part meant another overseas order. I started the shop so Kiwi makers can spend more time building and less time waiting for the next parcel.

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