Photoelectric protection device is also known as photoelectric protector, safety light curtain and safety grating. It forms protective grating through a group of infrared beams. When the grating is blocked, the photoelectric protection device sends a signal to control the potentially dangerous mechanical equipment to stop working, so as to reduce the possibility of injury to operators in the working environment and effectively protect the personal safety of operators. Mainly used in forging industry, automobile manufacturing industry, electronic and electrical manufacturing industry, with mechanical equipment supporting to protect the personal safety of the operator. It is different from the general sensor characteristics: with safety requirements, can be used for forging industry operators in the field of personal safety detection. Schke SICK sensor, SICK encoder, SICK photoelectric switch, SICK photoelectric sensor, SICK safety switch, SICK proximity switch