The LH635-4-3(21x21x35)110DEG from Picotronic is a Laser with Wavelength 635 nm, Power 4 mW, Output Power (CW) 4 mW, Operating Temperature -20 to 50 Degree C, Storage Temperature -40 to 80 Degree C. More details for LH635-4-3(21x21x35)110DEG can be seen below.