The DD635-0.4-3(12x38)-DOE from Picotronic is a Laser with Wavelength 635 nm, Power 0.4 mW, Output Power (CW) 0.4 mW, Operating Temperature -20 to 50 Degree C, Storage Temperature -40 to 80 Degree C. More details for DD635-0.4-3(12x38)-DOE can be seen below.