Model KI5365 consists of an Infra Red LED and a high sensitive Photo transistor. Other package has no aperture on the both light pass surface of the emitter an detector.
Model KI1694 consists of an Infra Red LED and a high sensitive Photo transistor. Other package has no aperture on the both light pass surface of the emitter an detector.
Model KI1320 consist of an Infra Red LED and a Photo IC(Digital Output). Other package has no aperture on the both light pass surface of the emitter an detector.
Model KI1315 consist of an Infra Red LED and a Photo IC(Digital Output). Other package has no aperture on the both light pass surface of the emitter an detector.