In the environment of machine tool work, the role of the safety light curtain is essential, the safety light curtain can effectively prevent the dangerous behavior of the operator, the production of the light curtain has the safety detection distance is small, the response speed is fast, the protection characteristics can detect the infrared signal in the shortest time, so that the first line of production workers work at ease. Because the longer the production time, the mechanical behavior of the operator and the brain tends to hallucinate and that's what happens when you do the same thing over and over again and the function of the light screen is to prevent the mechanical behavior of the operator and the error of the operation. The special alarm sound can wake up the operator to remind them to pay attention to safe and reasonable operation. When appropriate, you can stop for a period of time. This is an essential part.