Photoelectric sensor

A photoelectric sensor, comprising a light projecting part that emits light, a light receiving part that receives light, a housing that houses the light projecting part and the light receiving part, a setting part that receives an input operation from outside to set a threshold value, and an adjustment part that receives an input operation from outside to finely adjust the threshold value that has been set, wherein

• the housing has a substantially rectangular parallelepiped shape, and
• the housing comprises:
• a first surface having a light projecting/receiving surface allowing light from the light projecting part and light to the light receiving part to pass;
• a second surface located on a side opposite to the first surface;
• a third surface adjacent to the first surface and extending in a direction orthogonal to the first surface and the second surface;
• and
• a chamfered region formed by chamfering a corner of the substantially rectangular parallelepiped shape so as to connect the third surface and the second surface, wherein
• the adjustment part is provided in the chamfered region.