This listing is for one Multiwave Photonics MWTECH cLDD Compact Laser Diode Driver + QPHOTONICS QFLD-1550-100S Single mode fiber coupled laser diode, 100mW @ 1550nm. This compact Laser Diode Driver (cLDD) is a compact all-in-one unit designed for convenience of use, and combines a user interchangeable mount for a laser diode, SLED, SOA or similar device, a current driver and a TEC controller, all in a self-contained enclosure. Recently removed from large lab closure. In great condition, guaranteed fully functional and ready to use. Please make sure this works for your needs before purchase.