The Excelsior 488 from MKS | Spectra-Physics is a Laser with Wavelength 488 nm, Power 20 to 100 mW, Output Power (CW) 20 to 100 mW, Operating Temperature 10 to 40 Degree C, Storage Temperature -20 to 60 Degree C. More details for Excelsior 488 can be seen below.