The WSLP-1550-004m-PM-DFB from Wavespectrum Laser Inc. is a Laser Diode with Wavelength 1530 to 1570 nm, Output Power 0.004 W, Output Power (CW) 0.004 W, Threshold Current 16 mA, Operating Current 0.08 A. More details for WSLP-1550-004m-PM-DFB can be seen below.