Abstract: A compact, unitary non-contacting counting device includes a housing with contains a photoelectric sensor adapted to monitor the passage of articles and emit responsive electrical signals and a totalizer for receiving such electrical signals or a related binary output change of state indication and maintaining a count. The housing is unitary and is sealed to resist undesired entry of foreign matter. The housing is preferably generally L-shaped having a first leg containing the photoelectric sensor which is adapted to emit and receive light in a first direction and a second leg which contains the totalizer which is adapted to display the count in the direction which may be opposed to or perpendicular to the second direction. Separate power supplies may be employed for the photoelectric sensor and the totalizer. Lenses or fiber optics may be employed to improve the efficiency of transmission of light from the source to the object or target and return of the light from the object or target.