The LD-660-20-50-P-2 from OPELUS Technology Corporation is a Laser Diode with Wavelength 655 to 668 nm, Output Power 0.02 to 0.025 W, Output Power (CW) 0.02 to 0.025 W, Threshold Current 40 to 50 mA, Operating Current 70 to 80 mA. More details for LD-660-20-50-P-2 can be seen below.