The WSLP-375-004m-4-PD from Wavespectrum Laser Inc. is a Laser Diode with Wavelength 370 to 380 nm, Output Power 0.004 to 0.006 W, Operating Voltage 4.5 to 6.5 V, Operating Current 0.06 to 0.085 A, Threshold Current 40 to 60 mA. More details for WSLP-375-004m-4-PD can be seen below.