Patent ID: 6894623

Claim:
A display monitor for a multi-optical-path photoelectric safety apparatus having a multi-optical-path photoelectric sensor unit that includes a light emitter comprising a plurality of light emission elements and a light receiver having a corresponding number of light reception elements as the plurality of light emission elements, the light emission elements and the light reception elements forming a plurality of optical paths, said display monitor comprising: a first display section having a plurality of indicator lamps that indicate a light incidence/light block status condition for each of the plurality of optical paths; and a first switch section for selecting an optical path area from among optical path areas into which the plurality of optical paths are grouped with the number of the indicator lamps of the first display section, wherein the optical path area is selected by operating the first switch section and information concerning the light incidence/light block status condition of the optical paths in the selected optical path area is displayed on the first display section.