1. A sensor arrangement (100) with an optical sensor, wherein the optical sensor has at least one beam axis which is formed by a transmitter (4) emitting light beams (3) and a receiver (6) spatially separated from the transmitter (4), which receiver is formed to receive the light beams (3) of the transmitter (4), and with an evaluation unit (9) or a control and evaluation unit (14) in which an object detection signal is generated depending on the received signals of the receiver (6), wherein optical communication between transmitter (4) and receiver (6) is possible by means of the light beams (3), characterized in that the transmitter (4) electively transmits operating information or diagnostic information to the receiver (6) by means of the light beams (3), wherein the transmission is cyclical, in that the receiver (6) and the evaluation unit (9) or the control and evaluation unit (14) are integrated in a housing (2b) on which there is a display unit (15), in that the operating information and diagnostic information is stored and evaluated in the evaluation unit (9) or control and evaluation unit (14) and displayed on the display unit (15).