For sale is a Data Instruments Detector 3 Light Curtain Model 3LC-B, 9674601, 115/230V AC, 1/4A. Includes everything shown in the pictures. This is a BROKEN, DEFECTIVE UNIT. I don't know what is wrong with it. I just know that it is NOT WORKING properly in some way or AT ALL. Once again you will receive a BROKEN DEFECTIVE UNIT. That's what the label says. Thanks.