5Pcs TCST1103 Sensor Opto Slot 3.1MM Trans Thru 4-Lead Dual Row yz

2Pcs TCST1103 Sensor Opto Slot 3.1MM Trans Thru 4-Lead Dual Row fc

1Pcs TCST1103 Sensr Opto Slot 3.1MM Trans Thru 4-Lead Dual Row yu

10Pcs TCST1103 Sensor Opto Slot 3.1MM Trans Thru 4-Lead Dual Row gv

10Pcs RPR220 Reflective Opto Sensor Photoelectric Switch Sensor ob

5Pcs QRD1114 DIP-4 Sensor Opto Trans 1.27MM Refl Pcb Mount Fairchild TO2 wk

10Pcs QRD1114 DIP-4 Sensor Opto Trans 1.27MM Refl Pcb Mount Fairchild TO2 ov

3Pcs RPR220 Reflective Opto Sensor Photoelectric Switch Sensor om