Separate TypePhotoelectric Sensor needs to put the light-emitting element and the light-receiving element into boxes respectively (as shown in the picture)

The emitting side and the light-receiving side of Separate TypePhotoelectric Sensor are arranged oppositely, and the object passes between them, blocking the light source, thereby detecting the object.

Separate Type sensors can arbitrarily set the distance between the light-emitting element and the light-receiving element within the sensor's capabilities.