The RLT905-500G from Roithner Lasertechnik is a Laser Diode with Wavelength 900 to 910 nm, Output Power 0.5 W, Operating Voltage 1.70 to 1.85 V, Operating Current 0.65 to 0.69 A, Threshold Current 90 to 110 mA. More details for RLT905-500G can be seen below.