The LD-660-50-50-P-2 from OPELUS Technology Corporation is a Laser Diode with Wavelength 655 to 668 nm, Output Power 0.05 W, Operating Voltage 2.5 to 3 V, Operating Current 115 to 125 mA, Threshold Current 45 to 55 mA. More details for LD-660-50-50-P-2 can be seen below.