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Ten small green circuit boards with slotted infrared sensors

YINGHUA

YINGHUA 10PCS IR Infrared Slotted Optical Speed Sensor Module

SKU CH-ZG9M-TMDYP

A pack of ten infrared slotted optical sensors for motor speed detection

  • 10 sensors per pack for multiple motor-test setups
  • Slotted optical design detects rotation without contact
  • IR optocoupler output gives clean digital pulses
  • New condition ensures reliable operation from first use

10-Pack Infrared Slotted Speed Sensors

This pack contains ten IR slotted optical modules designed for speed measurement and detection tasks. Each unit combines an infrared emitter and phototransistor in a fork-style housing that outputs a digital signal when the beam is interrupted. The modules suit hobbyists, students and engineers building motor test rigs, encoder wheels or position-sensing experiments.

Ready-to-Use Optocoupler Modules for Motor Testing

Supplied as a complete lot, the sensors arrive pre-assembled on small PCBs with on-board current-limiting resistors and a comparator, so no extra discrete components are required for basic operation. The bundle quantity reduces per-unit cost for multi-axis projects or classroom kits, and the consistent pinout across all ten units simplifies wiring looms and firmware development.

Highlights

  • 10 sensors per pack for multiple motor-test setups
  • Slotted optical design detects rotation without contact
  • IR optocoupler output gives clean digital pulses
  • New condition ensures reliable operation from first use

Specifications

No published specifications for this item yet.

Questions about this item

How often will the IR emitter and phototransistor in these slotted optical modules need cleaning or replacement?

The IR emitter and phototransistor are solid-state parts with no moving elements; they only require occasional dust removal from the slot to maintain reliable detection.

What limits continuous operation — heat buildup in the optocoupler or signal jitter at high motor speeds?

Signal jitter from the phototransistor switching speed becomes the practical limit before any noticeable heat buildup occurs in the optocoupler during sustained motor testing.

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