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50Pcs TCRT5000 Reflective Photoelectric Switch Infrared ao

10Pcs Infrared Reflective Switch Ir Barrier Line Track Sensor TCRT5000 if

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10Pcs RPR220 Reflective Opto Sensor Photoelectric Switch Sensor ob

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20Pcs TCRT5000 Reflective Photoelectric Switch Infrared py

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