... invisible near infrared wavelength beam into visible light, IR Laser Test Card is able to detect, track, proofread and identify ... , rich glowing color, high concealing ability and reliability, easy test and long lifetime etc. It functions with 1mW of IR ... 620nm, Blue 430-450nm, Green 530-560nm; Paper, plastic, glass, mental, and ceramic material test cards are available; Specifications, shape, color ...