Kingbright l 934f3bt 3mm ir emitting led 940nm
Kingbright l 93 ir led and phototransistor spectrally and mechanically matched kingbright l 934f3bt a t 1 3mm infra red led that is spectrally and mechanically matched to a complementary ir phototransistor 58 2005 kingbright l 934f3bt 3mm ir emitting led 940nm