If there is quite special need of highly clear cross line generation under night vision work fields, it is not workable at all to use formal cross line drawing or printing device. The operation of Berlinlasers 808nm infrared cross laser alignment gets easy operation after connection with DC input power supply, which is emitting the most intense and powerful infrared laser light from beam aperture. Within wide range output power of 5mW to 400mW, this infrared laser module keeps work with high photoelectric ability and highly clear infrared cross line projection as long as 100 to 1000 meters in distance. This 808nm infrared cross laser alignment is emitting invisible infrared laser light and infrared cross line from beam aperture. In occasion that it is getting easy operation with night vision device, such as CCD camera, black and white camera or infrared laser camera, infrared laser module would make easy and clear IR cross line projection for any night vision fields. Owing to existence of invisible infrared laser light emission to human eyes, the operation of infrared cross line laser should avoid eye exposure to beam aperture and then achieve easy and secured measurement perfectly. http://www.berlinlasers.com/high-power-808nm-infrared-cross-laser-alignment