Specification Brand : Quarton BulletPoint1 : Fan Angle 60° Uniform Line with TTL function to allow up to 10K Hz modulation frequency. Line length: 46cm at 40cm (18" at 16 inches). High precision red line laser module in compact size. Built with high precision glass line lens and glass laser collimating lens for machine vision and laser alignment application. BulletPoint2 : Focus range: 40cm. Recommended working range: 3~72cm (1.18~28.35 inches). Best performance working range: 20~58cm (7.87~22.83 inches). BulletPoint3 : Wavelength : 630~645 nm. Laser power output: Class I, less than 0.39mW (measured by 7mm aperture stop at the position of 10 cm, tested according to the standard IEC-60825-1.) BulletPoint4 : Dimensions : Ø10 x 40 mm (Ø0.39" x 1.575"). Weight: 22g (0.776 oz.) BulletPoint5 : 3~6 VDC operation. Connection type : Lead wire. This laser module is not supposed to be sold with additional power source, power supply, or wiring terminals. Because modules are simply components, and it means that you have to wire it to your own power source by yourself. ExternallyAssignedProductIdentifier1 : 705702657872 ExternallyAssignedProductIdentifier2 : 0705702657872 ItemDisplayWeight : 19 grams ItemName : Quarton Laser Module VLM-635-57 LPO-D60-F40 Red Line Laser Module with TTL Function Fan Angle 60° Uniform Line, Class I Laser, Less Than 0.39mW (Focus: 40cm) ItemPackageDimensions_Height : 13.2 centimeters ItemPackageDimensions_Length : 1.5 centimeters ItemPackageDimensions_Width : 10.6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : diode-lasers Manufacturer : Quarton inc. Material : stainless_steel ModelNumber : VLM-635-57 LPO-D60 NumberOfItems : 1 OperationMode : Automatic PartNumber : VLM-635-57 LPO-D60 ProductDescription : The newly developed glass line lens come with various fan angles and they produce high quality uniform laser line. Ideal for automation, machine vision, image processing, digital data acquisition, counting, precision 3D scanner and science & medical application. They are all come with TTL function to allow up to 10K Hz modulation frequency. They are available at 10 cm, 20 cm, 40 cm, and 90 cm focus length; red, green wavelength; Class I, and Class II laser class to cover within 1 meter range task. Please search by using the keywords Quarton VLM-520-57, Quarton VLM-635-57, Quarton VLM-520-59, or Quarton VLM-635-59 to find out more product options on Amazon.