ITEM NAME:1X TCRT5000 Barrier Line Track sensor Infrared Reflective Photoelectric SwitchJR a.imagelink a:hover.imagelink {color:#ffffff;.1, using infrared reflection sensors TCRT5000. 2, fax machine, shredder paper detection. 3, obstacle detection. 7, has a fixed bolt hole, convenient installation. 2, test reflection distance: 1mm to 25mm.