50pcs/lot LTR-3208E infrared photosensitive receiver tube phototransistor 5mm black wavelength 940nm angle ±10°
https://www.vogueparade.com/shopping/EN/150412/1/1005003420778894/50pcslot-ltr-3208e-infrared-photosensitive-receiver-tube-phototransistor-5mm-black-wavelength-940nm-angle-10//