50pcs/lot ITR8307/S17/TR8(B) reflective small infrared photoelectric switch sensor optocoupler SMD SOP4
https://www.vogueparade.com/shopping/EN/150412/1/1005003420892106/50pcslot-itr8307s17tr8b-reflective-small-infrared-photoelectric-switch-sensor-optocoupler-smd-sop4//