Ocean Optics USB2000+ (LEDPRO-50) Spectrometer 340-1030nm Tested

Ocean Optics USB2000+ fiber optic spectrometer (LEDPRO-50 variant), spectral range 340-1030nm as listed for this variant. Removed from working LED equipment. USB-connectable to a computer (USB-B port), with interface circuit board. All 4 units tested and working. LED light test spectrum screenshot included (OceanView, peaks near 450nm and 550nm; units 01, 03, 04, 05 measured the same spectrum). Unit 02\'s spectrum shows a small spike near 640nm which does not affect observation (second screenshot included). Condition: Used, sold as shown. Quantity 4 available (units 01-04); price is per unit. Unit 05, whose USB connection is loose/unstable, is listed separately here: https://www..com/itm/407350141936 . Matching equipment also available: 50mm integrating sphere (one-lamp https://www..com/itm/407350123215 , two-lamp https://www..com/itm/407350123654 , two-port/one-lamp https://www..com/itm/407350124249) and QP600-2-VIS-NIR fiber https://www..com/itm/407350122306 .