The LD-660-20-50-N-2 from OPELUS Technology Corporation is a Laser Diode with Wavelength 655 to 665 nm, Output Power 0.02 to 0.022 W, Output Power (CW) 0.02 to 0.022 W, Threshold Current 25 to 35 mA, Operating Current 55 to 65 mA. More details for LD-660-20-50-N-2 can be seen below.