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IR Infrared Slotted Optical Speed Measuring Sensor Optocoupler Detect Module @zx

IR Infrared Slotted Optical Speed Measuring Sensor Optocoupler Detect Module *tm

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5PCS IR Infrared Slotted Optical Speed Measure Sensor Optocoupler Test Module *t

5PCS IR Infrared Slotted Optical Speed Measure Sensor Optocoupler Test Module #z

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