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Parameter:Wavelength: 850nm Output Power: 3 Working Voltage: three Working Temperature: +10 ℃~+40 ℃ Laser Shape: Dot Focusable: Yes Material and Color: Metal Lens: Plastic Dimensions: 12*12*35mm (sometime it is 12x45mm thanks to factory bulk production batch)Feature:This 850nm laser module with driving force built-in is an enterprise digital aspect and used for Industrial testament, Lab. The laser module is and exact and sensitive optical instrument. Before carrying on some laser DIY activities, please examine the technical information first and hold your eyes earlier than laser ray. Be yes the operator has travel in optics DIY or testingPackage:1pc 850nm 3 IR Infrared Laser Dot Module Focusable 2pc Caps (Line Cross) 1pc 12mm Holder