Model KI1234 consist of an Infra Red LED and Photo IC(Digital Output). Outer package has no aperture on the both light pass surfaces of the emitter and detector.
Model KI1234 consist of an Infra Red LED and Photo IC(Digital Output). Outer package has no aperture on the both light pass surfaces of the emitter and detector.
The KI1234-AALF has an open collector type output at low level at beam detection.