Specification Brand : Gerneric BulletPoint1 : *It is the most convenient and practical UV-400 measuring instrument. BulletPoint10 : Comparator function. | Data Hold function. | Data memory and read function.| Data logger function. | USB Interface. BulletPoint2 : *It is clean at one glance to anti-UV transmittivity. BulletPoint3 : *UV data by light showing and LCD screen BulletPoint4 : *Adjusting knob: Makes the measured value more accurate BulletPoint5 : *Dual-purpose: UV-400 measuring and anti-radiation testing BulletPoint6 : User calibration factor and color-correction functions. BulletPoint7 : Accumulation luminance measurement. BulletPoint8 : Max/Min/AVG function. BulletPoint9 : Backlight LCD display. ExternallyAssignedProductIdentifier : 7616991029512 ExternallyAssignedProductIdentifier1 : 0744370886870 ExternallyAssignedProductIdentifier2 : 744370886870 IncludedComponents : Carrying case, Instruction manual, Battery, CD software, Micro-USB cable. ItemName : Optical Anti-Radiation Ultraviolet Tester UV-400 Lens Tester CP-13B ItemPackageDimensions_Height : 3.4 inches ItemPackageDimensions_Length : 14.2 inches ItemPackageDimensions_Width : 11.3 inches ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-photometers-and-light-meters Manufacturer : KY NumberOfItems : 1 PartNumber : Tqyijhy PowerSourceType : Corded Electric ProductDescription : How to Use One: UV-400 ultraviolent-resistance test First, put the standard lens on the outlet of UV light, adjust the knob to make the value on the LCD screen same with the value of the standard lens. For the accuracy, you have to calibrate the value with the standard lens. Put the target lens on the outlet of UV light, and then the data displayed on the LCD screen is just the value of ultraviolent. The closer to 400 nm, the better the lens is. Two: anti-radiation test Makes the protruding part of lens in touch with the black anti-radiation testing point; If the lens is radiation-resistant, bird calls are given out, or is not radiation-resistant. Specifications Power Supply: AC 110 V/ 50 Hz; 20 W (outside US, we will ship 220v for other countries) Dimension: 273 x 162 x 112 mm Weight: 0.8 kg Wattage: 20W ProductSiteLaunchDate : 2015-11-24T08:00:00.000Z SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1