The package contains sufficient quantity of optical which can meet various needs in different projects. The optical are made of ABS, it is more wear-resistant, durable and has a . These optical are widely used in object detection and automatic counting. Features -Color: Black. -Material: ABS. -Size: About 1.70X1.60X1.30cm/0.67X0.63X0.51in. -Light Slit: 0.5mm. -Slot Width : 6mm. -Pitch : 11.5mm. -Working voltage: DC 5V. - This is a kind of reliable optical for printer, which is made of ABS and can be applied for long time. - The sensor optical senses the presence of an object by using the reflective IR beam from the object. - Fine workmanship, excellent texture, high efficiency and durability to help provide the best performance. - It is normally used for the detection of reflective materials such as paper, magnetic tapes, shredder paper, obstacle, etc. - Used for object detection and automatic counting, such as printer, copy machine, facsimile machine and vending machine, etc. Package list: 10 x Optical Sensor