The U-MD-654A1 from UNION OPTRONICS CORP. is a Laser with Power 3 to 4.5 mW, Wavelength 645, 650, 660 nm, Output Power (CW) 3 to 4.5 mW, Operating Temperature -10 to 60 Degree C, Storage Temperature -25 to 70 Degree C. More details for U-MD-654A1 can be seen below.